SlideShare a Scribd company logo

Classification of elements and periodicity in properties

S
SELVAKUMAR T

This document contains 47 multiple choice questions related to classification of elements and periodic trends in properties. The questions cover topics like electron affinity, ionization energy, ionic radii, electronegativity, oxidation states, electronic configurations and periodic trends.

Education
1 of 12
Download to read offline
1
2
3
4
5
6
7
8
9
10
11
12
Classification of Elements and Periodicity in Properties 1. Which of the following elements will have the highest electron affinity? (a) Chlorine (b) Nitrogen (c) Phosphorus (d) Fluorine 2. Which of the following alkaline earth metals has highest ionic mobility in aqueous solution? (a) 2 Be  (b) 2 Ca  (c) 2 Ba  (d) 2 Mg  3. The element, with atomic number 118, will be (a) a transition element (b) an alkali metal (c) an alkaline earth metal (d) a noble gas 4. Which of the following has the maximum electronegativity? (a) C (b) F (c) N (d) O 5. In the 3 2 ,P S  and Cl ions, the increasing order of size is (a) 2 3 S Cl P     (b) 2 3 Cl S P     (c) 2 3 S P Cl     (d) 3 2 P S Cl     6. The electronic configuration 2 2 5 1 1 2 2 3s s p s shows (a) ground state of fluorine atom (b) excited state of fluorine atom (c) excited state of neon atom (d) excited state of ion 2O 7. Which of the following is the most electropositive element? (a) Phosphorus (b) Magnesium (c) Aluminium (d) Sulphur 8. Which of the following has maximum ionization potential? (a) Na (b) K (c) Be (d) Mg 9. Which of the following ions in aqueous solution is the best conductor of electricity? (a) Li (b) Na (c) 2 Mg  (d) Cs 10. Which of the following has highest second ionisation energy? (a) Ni (b) V (c) Cr (d) Mn 11. The pair of amphoteric hydroxides is (a)  3 ,Al OH LiOH (b)    2 2 ,Be OH Mg OH (C)    3 2 ,B OH Be OH (d)    2 2 ,Be OH Zn OH 12. Largest difference in radii is found in case of the pair (a) Li, Na (b) Na, K (c) K, Rb (d) Rb, Cs 13. The element Z=114 has been discovered recently. It will belong to which of the following family/group and electronic configuration? (a)Carbon family  14 10 2 2 5 6 7 7Rn f d s p (b)Oxygen family,   14 10 2 4 5 6 7 7Rn f d s p (c)Nitrogen family,  14 10 2 6 5 6 7 7Rn f d s p (d)Halogen family,  14 10 2 5 5 6 7 7Rn f d s p 14. The element, with atomic number 118, will be (a) alkali (b) noble gas (c) lanthanide (d)transition element
15. The electronic configuration of an element is 2 2 6 2 3 1 2 2 3 3s s p s p . What is the atomic number of the element, which is just below the above element in the periodic table? (a) 33 (b) 34 (c) 36 (d) 49 16. In which of the following options the order of arrangement does not agree with the variation of property indicated against it? (a) 3 2 Al Mg Na F       (increasing ionic size) (b) B < C < N < O (increasing first ionization enthalpy) (c) I < Br < Cl < F (increasing electron gain enthalpy) (d) Li < Na < K < Rb (increasing metallic radius) 17. The species Ar, K and 2 Ca  contain the same number of electrons. In which order do their radii increase? (a) 2 Ca Ar K    (b) 2 Ca K Ar    (c) 2 Ca Ar K    (d) 2 Ar K Ca    18. The formation of the oxide ion  2 ,O g from oxygen atom requires first an exothermic and then an endothermic step as shown below:     1 ; 141 kJ molfO g e O g H            2 1 ; 780 kJ molfO g e O g H          Thus process of formation of 2 O  in gas phase is unfavourable even though 2 O  is isoelectronic with neon. It is due to the fact that (a) Electron repulsion outweighs the stability gained by achieving noble gas configuration (b) O ion has comparatively smaller size than oxygen atom (c) Oxygen is more electronegative (d) Addition of electron in oxygen results in larger size of the ion. 19. Which one of the following arrangements represents the correct order of least negative to most negative electron gain enthalpy for C, Ca, Al, F and O? (a) Ca < Al < C < O < F (b) Al < Ca < O < C < F (c) Al < O < C < Ca < F (d) C < F < O < Al < Ca 20. What is the value of electron gain enthalpy of Na if 1E of Na = 5.1 eV? (a) 5.1 eV (b) 10.2 eV (c) + 2.55 eV (d) + 10.2 eV 21. Among the elements Ca, Mg, P and Cl, the order of increasing atomic radii is: (a) Ca < Mg < P < Cl (b) Mg < Ca < Cl < P (c) Cl < P < Mg < Ca (d) P < Cl < Ca < F 22. Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements O, S, F and Cl? (a) Cl < F < O < S (b) O < S < F < Cl (c) F < S < O < Cl (d) S < O < Cl < F 23. Amongst the elements with following electronic configurations, which one of them may have the highest ionization energy?
(a) 2 2 3 3Ne s p   (b) 10 2 3 3 4 4Ar d s p   (c) 2 1 3 3Ne s p   (d) 2 3 3 3Ne s p   24. Which of the following electronic configuration of an atom has the lowest ionization enthalpy? (a) 2 2 3 1 2 2s s p (b) 2 2 5 1 1 2 2 3s s p s (c) 2 2 6 1 2 2s s p (d) 2 2 5 1 2 2s s p 25. Ionic radii are (a) inversely proportional to effective nuclear charge (b) inversely proportional to square of effective nuclear charge (c) directly proportional to effective nuclear charge (d) directly proportional to square of effective nuclear charge 26. Which of the following order is wrong? (a) 3 3 3NH PH AsH Acidic   (b) First IPLi Be B C    (c) 2 3 2 2Al O MgO Na O K O Basic    (d) Li Na K Cs Ionic radius        27. Correct order of first IP among following elements Be, B, C, N, O is (a) B < Be < C < O < N (b) Be < Be < C < N < O (c) Be < B < C < N < O (d) Be < B < C < O < N 28. The first ionization potentials (eV) of Be and B respectively are (a) 8.29, 9.32 (b) 9.32, 9.32 (c) 8.29, 8.29 (d) 9.32, 8.29 29. Which of the following does not represent the correct order of the properties indicated? (a) 2 2 2 2 Ni Cr Fe Mn       (size) (b) Sc > Ti > Cr > Mn (size) (c) 2 2 2 2 Mn Ni Co Fe       (unpaired electron) (d) 2 2 2 2 Fe Co Ni Cu       (unpaired electron) 30. Which one of the following ions will be the smallest in size? (a) Na (b) 2 Mg  (c) F (d) 2O 31. Among the following oxides, the one which is most basic is (a) ZnO (b) MgO (c) 2 3Al O (d) 2 5N O 32. The 1 2 3 4, , ,IP IP IP IP and 5IP of an element are 7.1, 14.3, 34.5, 46.8, and 162.2 eV respectively. The element is likely to be (a)Na (b) Si (c) F (d) Ca 33. Pd has exceptional valence shell electronic configuration of 10 0 4 5d s . It is a member of (a) 5th period, Group 10 (b) 4th Period, Group 12 (c) 6th Period, Group 10 (d) 5th Period, Group 14 34. The electronic configuration of an element is 2 2 6 2 4 1 ,2 2 ,3 3s s p s p . The atomic number of the element present just below the above element in the periodic table is (a) 36 (b) 34 (c) 33 (d) 32 35. Calculate the energy needed to convert three moles of sodium atoms in the gaseous state to sodium ions. The ionization energy of sodium is 495 1 kJ mol (a) 1485 kJ (b) 495 kJ (c) 148.5 kJ (d) None
36. The paramagnetic species among the following is 2 3 , , ,Na Zn Cu Fe    (a) Na (b) 2 Zn  (c) Cu (d) 3 Fe  37. The correct decreasing order of atomic size among the following species is: 2 2 , , , ,Ar K Cl S Ca    (a) 2 2 Ca K Ar Cl S        (b) 2 2 K Ca Cl Ar S        (c) 2 2 S Cl Ar K Ca        (d) 2 2 S Ar Cl Ca K        38. Which is correct in the following? (a) Radius of Cl atom is 0.99 o A , while that of Cl ion is 1.54 o A (b) Radius of Cl atom is 0.99 o A , while that of Na atom is 1.54 o A (c) Radius of Cl atom is 0.95 o A , while that of Cl ion is 0.81 o A (d) Radius of Na atom is 0.95 o A , while that of Na ion is 1.54 o A 39. Which oxide of N is isoelectronic with 2CO ? (a) 2NO (b) NO (c) 2N O (d) 2 3N O 40. Ionization potential of Na would be numerically the same as (a) Electron affinity of Na (b) Electronegativity of Na (c) Electron affinity of He (d) ionization potential of Mg 41. What should be the atomic number of the next halogen if discovered in future? (a) 115 (b) 119 (c) 117 (d) 121 42. The electronic configurations for some neutral atoms are given below: Which of these is expected to have the highest second ionization enthalpy? (a) 2 2 6 2 1 ,2 2 ,3s s p s (b) 2 2 6 1 1 ,2 2 ,3s s p s (c) 2 2 6 2 2 1 ,2 2 ,3 3s s p s p (d) 2 2 6 2 3 1 ,2 2 ,3 3s s p s p 43. The law of triads is applicable to (a) C, N, O (b) H, O, N (c) Na, K, Rb (d) Cl, Br, I 44. The law of triads is not applicable on (a) Cl, Br, I (b) Na, K, Rb (c) S, Se, Te (d) Ca, Sr, Ba 45. A given compound 2A whose total A Ad  is o 1.4 A . The atomic (covalent) radius of an atom A is (a) o 0.7 A (b) o 0.5 A (c) o 0.2 A (d) o 0.1 A 46. The ionic radius of Cr is minimum in which of the following compounds? (a) 3CrF (b) 3CrCl (c) 2 3Cr O (d) 2 4K CrO 47. Arrange 3 3 3 , ,Ce La Pm  and 3 Yb  in increasing order of their size (a) 3 3 3 3 Yb Pm Ce La      (b) 3 3 3 3 Ce Yb Pm La      (c) 3 3 3 3 Yb Pm La Ce      (d) 3 3 3 3 Yb Pm La Ce      Direction (Q. No – 48): In the following question, more than one of the answer given are correct. Select the correct answer and mark it according to the following codes: Codes: (i) a, b and c are correct (ii) a and b are correct (iii) b and d are correct (iv) a and c are correct
48. Choose the correct order of atomic radius (a) Li > Be > B > C > N > O > F (b) Li < Na < K < Rb < Cs (c) 2 3 4 Mn Mn Mn Mn      (d) 2 O O O    Directions (Q. No – 49, 50): Read the passage given below and answer the questions that follows: The tendency of an atom to attract shared pair of electrons towards itself is called electronegativity. EN and EA both have tendency to attract electrons but electron affinity is for isolated atoms, whereas electronegativity is for bonded atoms. A polar covalent or ionic bond of A – B may be broken as (a) :A B A B     (EN A > EN B) as (a) :A B A B     (EN A < EN B) 49. Which of the following compound has highest value of bond length? (a) CsF (b) CsBr (c) CsI (d) CsCl 50. The electronegativities of F and H are 4.0 and 2.1 respectively. The percent ionic character in H and F bond is (a) 43 (b) 34 (c) 94 (d) 39 51. Which of the following is not an actinoid? (a) Curium (Z = 96) (b) Californium (Z = 98) (c) Uranium (Z = 92) (d)Terbium (Z = 65) 52. Which of the following species has lowest ionization potential? (a) O (b) 2O (c) 2O (d) 2O 53. The decreasing order of the ionization potential of the following element is (a) Ne > Cl > P > S > Al > Mg (b) Ne > Cl > P > S > Mg > Al (c) Ne > Cl > S > P > Mg > Al (d) Ne > Cl > S > P > Al > Mg 54. The radii of , ,F F O and 2 O  are in the order (a) 2 O F F O     (b) 2 F O F O     (c) 2 O O F F     (d) 2 O F O F     55. Which ionization potential (IP) in the following equations involves the greatest amount of energy? (a) Na Na e    (b) 2 K K e     (c) 2 3 C C e     (d) 2 Ca Ca e     56. Which of the following arrangements represents the increasing order (smallest to largest) of ionic radii of the given species 2 2 3 3 , , ,O S N P    ? (a) 2 3 2 3 O N S P       (b) 2 3 3 2 O P N S       (c) 3 2 3 2 N O P S       (d) 3 2 2 3 N S O P       57. Which of the following order is wrong? (a) 3 3 3NH PH AsH  Acidic (b) Li < Be < B < C – IE1 (c) 2 3 2 2Al O MgO Na O K O    basic (d) Li Na K Cs        Ionic radius 58. Which of the following sequence correctly represents the decreasing acidic nature of oxides? (a) 2 2 3 2 2 3Li O BeO B O CO N O    (b) 2 3 2 2 3 2N O CO B O BeO Li O    (c) 2 2 3 2 3 2CO N O B O BeO Li O    (d) 2 3 2 2 3 2B O CO N O Li O BeO   
59. In which of the following arrangements, the sequences is not strictly according to the property written against it? (a) 2 2 2 2;CO SiO SnO PbO   increasing oxidizing power (b) 3 3 3 3;NH PH AsH SbH   increasing basic strength (c) HF < HCl < HBr < HI; increasing acid strength (d) B < C < O < N; increasing first ionization enthalpy 60. The ionic radii o in A       of 3 2 ,N O  and F are respectively (a) 1.71, 1.40 and 1.36 (b) 1.71, 1.36 and 1.40 (c) 1.36, 1.40 and 1.71 (d) 1.36, 1.71 and 1.40 61. Amongst 2 2 2, ,H O H S H Se and 2H Te, the one with the highest boiling point is (a) 2H Obecause of hydrogen bonding (b) 2H Te because of higher molecular weight (c) 2H S because of hydrogen bonding (d) 2H Sebecause of lower molecular weight 62. Match the Column – I and Column – II and select the correct answer by given codes. Column – I (Elements) Column – II (Properties) A. 3 2 Li Al Mg K       I. EA (Electron affinity) B. 3 2 Li Al Mg K       II. Ionic radii C. Cl > F > Br > I III. EN (Electronegativity) D. F > Cl > Br > I IV.Effective nuclear charge (a) A – II, B – IV, C – III, D – I (b) A – II, B – IV, C – I, D – III (c) A – IV, B – II, C – III, D – I (d) A – IV, B – II, C – I, D – III 63. The Van der Waal and covalent radii of fluorine atom respectively from the following figure are (a) 219pm, 72pm (b) 75pm, 72pm (c) 147pm, 72pm (d) 147pm, 144pm 64. Cl, Br, I, if this is Dobereiner’s triad and the atomic masses of Cl and I are 35.5 and 127 respectively the atomic mass of Br (a) 162.5 (b) 91.5 (c) 81.25 (d) 45.625 PERIOD, GROUP AND BLOCK 65. Which of the following set of elements belongs to same period: (a) Zn, Cd, Hg (b) Fr, Ra, U (c) K, Ca, Ag (d) None 66. Elements upto atomic number 112 have been discovered till now. What will be the electronic configuration of the element possessing atomic no. 108: (a)   14 6 2 5 6 7Rn f d s (b) 14 8 2 6 7 7f d s (c)  14 8 0 5 6 7Rn f d s (d)  14 8 2 4 5 6Xe f d s 67. In 6th period of the modern periodic table, electronic energy levels are in the order: (a) 6s, 4f, 5d, 6p(b) 6s, 6p, 4f, 5d
(c) 4f, 5d, 6s, 6p(d) None 68. The element with atomic number Z = 118 will be: (a) Noble gas (b) Transition metal (c) Alkali metal (d) Alkaline earth metal 69. The atom having the valence shell electronic configuration 2 2 4 4s p would be in: (a) Group II A and period 3 (b) Group II B and period 4 (c) Group IV A and period 4 (d) Group IV A and period 3 70. The electronic configuration of d – block elements is exhibited by (a)  1 2 1 10 1ns n d   (b)  2 10 1ns n d (c)   10 2 1n d s (d) 2 5 ns np 71. Which of the following electronic configuration belongs to inert gas elements: (a)  2 10 1ns n d (b)  2 2 6 1ns n s p (c) 2 6 ns np (d) None 72. Total number of p block elements among given atomic number 83, 79, 42, 64, 37, 54, 34 (a) 3 (b) 4 (c) 5 (d) 6 Zeff, SCREENING CONSTANT & ATOMIC RADIUS 73. The formula for effective nuclear charge is (if σ is screening constant) (a) Z – σ (b) Z + σ (c) Z σ –1 (d) Z σ 74. Effective nuclear charge in group generally (a) Increases down the group (b) Decreases down the group (c) Remains constant (d) First increases than decreases 75. In sodium atom the screening is due to: (a) 2 6 3 ,3s p (b) 1 2s (c) 2 2 6 1 ,2 ,2s s p (d) 2 2 1 ,2s s 76. The correct order of size would be (a) Ni < Pd ~ Pt (b) Pd < Pt < Ni (c) Pt > Ni > Pd (d) Pd > Pt > Ni 77. Which of the following is not isoelectronic series (a) 3 , ,Cl P Ar  (b) 3 2 , ,N Ne Mg  (c) 3 , ,B He Li  (d) 3 2 , ,N S Cl   78. Which group of atoms have nearly same atomic radius? (a) Na, K, Rb, Cs (b) Li, Be, B, C (c) Fe, Co, Ni (d) F, Cl, Br, I 79. Atomic radii of Fluorine and Neon in Angstrom units are given by (a) 0.72, 1.60 (b) 1.60, 1.60 (c) 0.72, 0.72 (d) None of these 80. Which of the following has largest radius: (a) 2 2 6 2 1 2 2 3s s p s (b) 2 2 6 2 1 1 2 2 3 3s s p s p (c) 2 2 6 3 1 2 2 3s s p p (d) 2 2 6 2 5 1 2 2 3 3s s p s p 81. Correct order of ionic radii is (a) 4 7 Ti Mn   (b) 35 37 Cl Cl   (c) K Cl   (d) 3 5 P P   82. The radius of potassium atom is 0.203 nm. The radius of the potassium ion in nanometer will be (a) 0.133 (b) 0.231 (c) 0.234 (d) 0.251 83. 2 S is not isoelectronic with
(a) Ar (b) Cl (c) HS (d) 3 Ti 84. Maximum size of first member of a period is due to (a) Maximum number of shells (b) Maximum screening effect (c) Minimum Zeff (d) All 85. In which of the following pair radii of second species is smaller than that of first species? (a) Li, Na (b) ,Na F  (c) 3 3 ,N Al  (d) 7 4 ,Mn Mn  86. Spot the incorrect order of atomic radii: (a) Cu Znr  (b) Cl Fr  (c) P Sr  (d) Sc Tir  87. Which of the following orders of atomic radii are correct? (A) Li < Be < Na(B) Ni < Cu < Zn (C) Ti > V > Cr (D) Ti > Zr ~ Hf (a) All (b) A, B (c) B, C (d) B, D 89. Decreasing order of size of ions is: (a) 2 3 Br S Cl N       (b) 3 2 N S Cl Br       (c) 2 3 Br Cl S N       (d) 3 2 N Cl S Br       90. The covalent and Vander Waals radii of hydrogen respectively are (a) 0.37 o A , 0.8 o A (b) 0.37 o A , 0.37 o A (c) 0.8 o A , 0.8 o A (d) 0.8 o A , 0.37 o A 91. Which of the following sequence is correct for decreasing order of ionic radius (a) 2 2 , , , ,Se I Br O F     (b) 2 2 , , , ,I Se O Br F     (c) 2 2 , , , ,Se I Br F O     (d) 2 2 , , , ,I Se Br O F     92. Incorrect order of ionic radius is (a) 3 3 3 3 La Gd Eu Lu       (b) 2 3 4 5 V V V V       (c) 2 3 ln Sn Sb     (d) 3 5 7 K Sc V Mn       IONISATION POTENTIAL 93. Correct order of Ist I.P. are: (A) Li < B < Be < C (B) O < N < F (C) Be < N < Ne (a) A, B (b) B, C (c) A, C (d) A, B, C 94. The ionisation potential of isotopes of an element will be (a) Same (b) Different (c) Depends on atomic masses (d) Depends on number of neutrons 95. A sudden large jump between the values of 2nd and 3rd IP of an element would be associated with the electronic configuration: (a) 2 2 6 1 1 ,2 2 ,3s s p s (b) 2 2 6 2 5 1 ,2 2 ,3 3s s p s p (c) 2 2 6 2 5 1 ,2 2 ,3 3s s p s p (d) 2 2 6 2 1 ,2 2 ,3s s p s 96. Compared to the first ionisation potential, the value of second ionization potential of an element is (a) Negligible (b) Smaller (c) Greater (d) Double 97. In which of the following pairs, the ionization energy of the first species is less than that of the second:
(a) ,O O (b) ,S P (c) N, P (d) ,Be Be 98. The correct order of stability of 2 3 , ,Al Al Al   is (a) 3 2 Al Al Al     (b) 2 3 Al Al Al     (c) 2 3 Al Al Al     (d) 3 2 Al Al Al     99. Minimum first ionisation energy is shown by which electronic configuration (a) 2 2 5 1 2 2s s p (b) 2 2 6 2 2 1 2 2 3 3s s p s p (c) 2 2 6 1 1 2 2 3s s p s (d) 2 2 6 1 2 2s s p 100. Successive ionization energies of an element ‘X’ are given below (in K. cal) 1IP 2IP 3IP 4IP 165 195 556 595 Electronic configuration of the element ‘X’ is: (a) 2 2 6 2 2 1 ,2 2 ,3 3s s p s p (b) 2 1 1 ,2s s (c) 2 2 2 1 ,2 2s s p (d) 2 2 6 2 1 ,2 2 ,3s s p s 101. The correct order of decreasing first ionization energy is (a) Si > Al > Mg > Na (b) Si > Mg > Al > Na (c) Al > Si > Mg > Na (d) Mg > Li > Al > Si 102. The strongest reducing agent among the following us: (a) Na (b) Mg (c) Al (d) K 103. Which ionisation potential (IP) in the following equations involves the greatest amount of energy (a) 2 K K e     (b) 2 Li Li e     (c) Fe Fe e    (d) 2 Ca Ca e     104. The correct values of ionisation energies (in kJ 1 mol ) of Be, Ne, He and N respectively are (a) 786, 1012,999, 1256 (b) 1012, 786, 999, 1256 (c) 786, 1012, 1256, 999 (d) 786, 999, 1012, 1256 ELECTRON AFFINITY 105. In which case the energy released is minimum? (a) Cl Cl  (b) B B  (c) N N  (d) C C  106. Process in which maximum energy is released? (a) 2 O O  (b) 2 Mg Mg   (c) Cl Cl  (d) F F  107. Which of the following is energy releasing process (a)  X X g e    (b)   2 O g e O     (c)    O g O g e    (d)    O g e O g    108. In which of the following process energy is liberated: (a) Cl Cl e   (b) HCl H Cl    (c) Cl e Cl   (d) 2 O e O    109. Element of which atomic number has highest electron affinity
(a)35 (b) 17 (c) 9 (d) 53 110. The electron affinity (a) Of carbon is greater than oxygen (b) Of fluorine is less than iodine (c) Of fluorine is less than chlorine (d) Of sulphur is less than oxygen 111. Which of the following element will form most stable bivalent anion (a) 2 0 2 2s p (b) 2 2 2 2s p (c) 2 3 2 2s p (d) 2 1 2 2s p 112. The correct set of decreasing order of electronegativity is (a) Li, H, Na (b) Na, H, Li (c) H, Li, Na (d) Li, Na, H 113. The pair with minimum difference in electronegativity is (a) F, Cl (b) C, H (c) P, H (d) Na, Cs 114. Among the following least and most polar bonds are respectively (A) C – I (B) N – O (C) C – F (D) P – F (a) D and C (b) A and D (c) B and D (d) B and C 115. Electronegativity of an element can be measured using: (a) Pauling’s scale (b) Mulliken’s scale (c) Both (d) None 116. The electronegativities of the following elements: H, O, F, S and Cl increase in the order (a) H < O < F < S < Cl (b) Cl < H < O < F < S (c) H < S < O < Cl < F (d) H < S < Cl < O < F 117. Which of the following is different from other three oxides (a) MgO (b) SnO (c) PbO (d) ZnO 118. Which of the following diagrams is correctly related to electron affinity of halogens (a) (b) (c) (d) 119. Elements of which group form anions most readily? (a) Oxygen family (b) Nitrogen group (c) Halogens (d) Alkali metals 120. Which is the weakest base among NaOH,  2 Ca OH , KOH and  2 Zn OH (a) NaOH (b) KOH (c)  2 Ca OH (d)  2 Zn OH 121. If electronegativity values of element X and Y are 3.8 and 1.8 respectively, then percentage of ionic character in compound XY is: (a) 50 (b) 46 (c) 64 (d) 36 122. The outer electron configuration of Gd (Atomic No: 64) is (a) 4 4 2 4 5 6f d s (b) 7 1 2 4 5 6f d s (c) 3 5 2 4 5 6f d s (d) 8 0 2 4 5 6f d s
123. The correct order of electron gain enthalpy with negative sign of F, Cl, Be and I, having atomic number 9, 17, 35 and 53 respectively, is (a) I > Br > Cl > F (b) F > Cl > Br > I (c) Cl > F > Br > I (d) Br > Cl > I > F 124. For electron affinity of halogens which of the following is correct? (a) Br > F (b) F > Cl (c) Br > Cl (d) F > I 125. The pair of amphoteric hydroxide is (a)  3 ,Al OH LiOH (b)    2 2 ,Be OH Mg OH (c)    3 2 ,Be OH Be OH (d)    2 2 ,Be OH Zn OH 126. Identify the least stable ion amongst the following (a) Li (b) Be (c) B (d) C 127. Amongst Be, B, Mg and Al, the second ionization potential is maximum for (a) B (b) Be (c) Mg (d) Al 128. In the 3rd period, the first ionization potential is of the order? (a) Na > Mg > Al > Si > P (b) Mg > Na > Si > P > Al (c) Na < Mg < Al < Si < P (d) Na < Al < Mg < Si < P 129. The size of ionic species is correctly given in order? (a) 7 4 2 Cl Si Mg Na       (b) 2 4 7 Na Mg Si Cl       (c) 2 7 4 Na Mg Cl Si       (d) 7 2 4 Cl Na Mg Si       130. Which one of the following statements is false? (a) The electron affinity of chlorine is less than that of fluorine (b) The electronegativity of fluorine is more than that of chlorine (c) The electron affinity of bromine is less than that of chlorine (d) The electronegativity of chlorine is more than that of bromine. 131. The set representing the correct order for first ionization potential is (a) K > Na > Li (b) Be > Mg > Ca (c)B > C > N (d) Ge > Si > C
Answer Keys 1. (a) 2. (c) 3. (d) 4. (b) 5. (b) 6. (c) 7. (b) 8. (c) 9. (d) 10. (c) 11. (d) 12. (b) 13. (a) 14. (b) 15. (a) 16. (b) 17. (b) 18. (a) 19. (a) 20. (a) 21. (c) 22. (b) 23. (d) 24. (b) 25. (a) 26. (b) 27. (a) 28. (d) 29. (a) 30. (b) 31. (b) 32. (b) 33. (a) 34. (b) 35. (a) 36. (d) 37. (c) 38. (b) 39. (c) 40. (a) 41. (c) 42. (b) 43. (d) 44. (b) 45. (a) 46. (d) 47. (a) 48. (a) 49. (c) 50. (a) 51. (d) 52. (d) 53. (b) 54. (d) 55. (b) 56. (a) 57. (b) 58. (b) 59. (b) 60. (a) 61. (a) 62. (b) 63. (c) 64. (c) 65. (b) 66. (a) 67. (a) 68. (a) 69. (c) 70. (a) 71. (a) 72. (c) 73. (a) 74. (a) 75. (c) 76. (c) 77. (a) 78. (d) 79. (c) 80. (a) 81. (a) 82. (d) 83. (a) 84. (d) 85. (c) 86. (c) 87. (a) 88. (c) 89. (a) 90. (a) 91. (d) 92. (a) 93. (d) 94. (a) 95. (d) 96. (c) 97. (b) 98. (d) 99. (c) 100. (d) 101. (b) 102. (d) 103. (b) 104. (c) 105. (c) 106. (c) 107. (d) 108. (c) 109. (b) 110. (c) 111. (b) 112. (c) 113. (c) 114. (b) 115. (c) 116. (d) 117. (a) 118.(c) 119. (c) 120. (d) 121. (b) 122. (b) 123. (c) 124. (d) 125. (d) 126. (b) 127. (a) 128. (d) 129. (b) 130. (a) 131. (b)

More Related Content

PDF
Sample paper 3 Class xi chem
Ashima Aggarwal
 
PDF
Sample paper xi chem 2
Ashima Aggarwal
 
PDF
Class XI Sample paper 1 Chemistry
Ashima Aggarwal
 
PPTX
Aieee Chemistry 2004
Vasista Vinuthan
 
PDF
Inorganic Chemistry - Topic Wise Multiple Choice By Malik Xufyan
Malik Xufyan
 
PDF
Aieee 2004 chemistry
prasad1086
 
PDF
PPSC CHEMISTRY PAST PAPERS MCQS solved BY Malik XUFYAN
Malik Xufyan
 
PPTX
AieeeChemistry 2005
Vasista Vinuthan
 
Sample paper 3 Class xi chem
Ashima Aggarwal
 
Sample paper xi chem 2
Ashima Aggarwal
 
Class XI Sample paper 1 Chemistry
Ashima Aggarwal
 
Aieee Chemistry 2004
Vasista Vinuthan
 
Inorganic Chemistry - Topic Wise Multiple Choice By Malik Xufyan
Malik Xufyan
 
Aieee 2004 chemistry
prasad1086
 
PPSC CHEMISTRY PAST PAPERS MCQS solved BY Malik XUFYAN
Malik Xufyan
 
AieeeChemistry 2005
Vasista Vinuthan
 

What's hot (17)

PDF
Dpp 01 periodic_table_jh_sir-3576
NEETRICKSJEE
 
PPT
Ch04 lecpptchem1012011f
Alec Cafaro
 
PDF
Chemical bonding
suresh gdvm
 
PPT
Electrochemistry
Celz
 
PDF
NEET Courses - iPositiev Academy
iPositive Academy
 
PDF
IB Chemistry on Lewis structure, ionic and covalent bonding
Lawrence kok
 
PDF
2010 sri chaitanyas_aieee_solution_key
Sri Chaitanya Junior College
 
PDF
Chemistry The Science in Context Volume I and II 4th Edition Gilbert Solution...
QuincyBrowns
 
PDF
Chemstry 2nd book
SAMMAN Sammi
 
PPT
Electrochemistry
omar_egypt
 
PPT
Electrochemistry by rawat
Rawat DA Greatt
 
PPT
Acids and bases dr.surendran prambadath
Surendran Parambadath
 
PDF
Structure of atom Practice Exercise
suresh gdvm
 
PDF
01 bitsat test iv cms
Himanshu Gupta
 
PPTX
New chm 152_unit_9_power_points-sp13
caneman1
 
PPTX
Chapter 8
kau_deanship of e-learning and distance education
 
PPT
Lect w13 152_electrochemistry_abbrev
chelss
 
Dpp 01 periodic_table_jh_sir-3576
NEETRICKSJEE
 
Ch04 lecpptchem1012011f
Alec Cafaro
 
Chemical bonding
suresh gdvm
 
Electrochemistry
Celz
 
NEET Courses - iPositiev Academy
iPositive Academy
 
IB Chemistry on Lewis structure, ionic and covalent bonding
Lawrence kok
 
2010 sri chaitanyas_aieee_solution_key
Sri Chaitanya Junior College
 
Chemistry The Science in Context Volume I and II 4th Edition Gilbert Solution...
QuincyBrowns
 
Chemstry 2nd book
SAMMAN Sammi
 
Electrochemistry
omar_egypt
 
Electrochemistry by rawat
Rawat DA Greatt
 
Acids and bases dr.surendran prambadath
Surendran Parambadath
 
Structure of atom Practice Exercise
suresh gdvm
 
01 bitsat test iv cms
Himanshu Gupta
 
New chm 152_unit_9_power_points-sp13
caneman1
 
Chapter 8
kau_deanship of e-learning and distance education
 
Lect w13 152_electrochemistry_abbrev
chelss
 
Ad

Similar to Classification of elements and periodicity in properties (20)

DOCX
4. Classifiction of elements MCQ (2)-1.docx
MadhuMoni2
 
PDF
chemistry__ 6. kips (obj)
abdulwaheed400
 
PDF
AP CHEM MIDTERM REVIEW
Stephen Faucher
 
DOC
Chemical bonding
International advisers
 
PDF
Dpp 02 periodic_table_jh_sir-3579
NEETRICKSJEE
 
PPTX
AFMC Chemistry 2002
Vasista Vinuthan
 
PDF
Practicefinal exam
Linnel C. Novo
 
PDF
Bitsat previous-year-question-papers-2014
Rajendra Singh
 
PDF
COMPLETE INORGANIC CHEMISTRY __ Class Notes.pdf
MihirPatel605952
 
DOC
Atomic structure
International advisers
 
DOCX
D4_D5_Periodicity_Chemistry_8_pgs.docx
FarahHammoud7
 
PDF
PPSC Chemistry Lecturer Preparation (Test # 09)- Malik Xufyan
Malik Xufyan
 
DOCX
Chemistry xii test 1
TEST
 
PDF
chemistry exemplar class 12 d and f block elements pdf
Rohit Raj Ranjan
 
DOC
Class11
jasbirsingh04
 
DOC
#31
Lamar1411_SI
 
PPTX
UPSEE - Chemistry -1999 Unsolved Paper
Vasista Vinuthan
 
PPTX
UPSEE - Chemistry -2002 Unsolved Paper
Vasista Vinuthan
 
DOC
Ninth class chemistry mcqs (periodicity of elements)
Dr. Sajid Ali Talpur
 
PPTX
AMU - Chemistry - 2004
Vasista Vinuthan
 
4. Classifiction of elements MCQ (2)-1.docx
MadhuMoni2
 
chemistry__ 6. kips (obj)
abdulwaheed400
 
AP CHEM MIDTERM REVIEW
Stephen Faucher
 
Chemical bonding
International advisers
 
Dpp 02 periodic_table_jh_sir-3579
NEETRICKSJEE
 
AFMC Chemistry 2002
Vasista Vinuthan
 
Practicefinal exam
Linnel C. Novo
 
Bitsat previous-year-question-papers-2014
Rajendra Singh
 
COMPLETE INORGANIC CHEMISTRY __ Class Notes.pdf
MihirPatel605952
 
Atomic structure
International advisers
 
D4_D5_Periodicity_Chemistry_8_pgs.docx
FarahHammoud7
 
PPSC Chemistry Lecturer Preparation (Test # 09)- Malik Xufyan
Malik Xufyan
 
Chemistry xii test 1
TEST
 
chemistry exemplar class 12 d and f block elements pdf
Rohit Raj Ranjan
 
Class11
jasbirsingh04
 
#31
Lamar1411_SI
 
UPSEE - Chemistry -1999 Unsolved Paper
Vasista Vinuthan
 
UPSEE - Chemistry -2002 Unsolved Paper
Vasista Vinuthan
 
Ninth class chemistry mcqs (periodicity of elements)
Dr. Sajid Ali Talpur
 
AMU - Chemistry - 2004
Vasista Vinuthan
 
Ad

Recently uploaded (20)

PDF
O7-L3 Supply Chain Operations - ICLT Program
labyankof
 
PDF
Physiotherapy_for_Respiratory_and_Cardiac_Problems WEBBER.pdf
DrMONISHAphysio
 
PDF
Supply Chain Operations Speaking Notes -ICLT Program
labyankof
 
PDF
Abdominal Access Techniques with Prof. Dr. R K Mishra
mohitsuren827
 
PPTX
Microbial diseases, their pathogenesis and prophylaxis
DevlinaSengupta
 
PPTX
BOWEL ELIMINATION FACTORS AFFECTING AND TYPES
PreetiSawant10
 
PDF
FourierSeries-QuestionsWithAnswers(Part-A).pdf
Raji Murugan
 
PPTX
Final Presentation General Medicine 03-08-2024.pptx
ZaheerAhmad228692
 
PDF
Business Ethics Teaching Materials for college
CynthiaCastillo40
 
PDF
RMMM.pdf make it easy to upload and study
sajedul2
 
PDF
O5-L3 Freight Transport Ops (International) V1.pdf
labyankof
 
PPTX
Cell Types and Its function , kingdom of life
ClaireMangundayao1
 
PPTX
The Healthy Child – Unit II | Child Health Nursing I | B.Sc Nursing 5th Semester
RAKESH SAJJAN
 
PDF
Basic Mud Logging Guide for educational purpose
wdandworks
 
PPTX
Introduction_to_Human_Anatomy_and_Physiology_for_B.Pharm.pptx
chetansingh379583
 
PDF
Anesthesia in Laparoscopic Surgery in India
mohitsuren827
 
PPTX
Cell Structure & Organelles in detailed.
DHANASHREESIVAKUMAR
 
PPTX
Institutional Correction lecture only . . .
limvtheghins
 
PDF
TR - Agricultural Crops Production NC III.pdf
avgilmegino3
 
PDF
01-Introduction-to-Information-Management.pdf
PrinceIbarra
 
O7-L3 Supply Chain Operations - ICLT Program
labyankof
 
Physiotherapy_for_Respiratory_and_Cardiac_Problems WEBBER.pdf
DrMONISHAphysio
 
Supply Chain Operations Speaking Notes -ICLT Program
labyankof
 
Abdominal Access Techniques with Prof. Dr. R K Mishra
mohitsuren827
 
Microbial diseases, their pathogenesis and prophylaxis
DevlinaSengupta
 
BOWEL ELIMINATION FACTORS AFFECTING AND TYPES
PreetiSawant10
 
FourierSeries-QuestionsWithAnswers(Part-A).pdf
Raji Murugan
 
Final Presentation General Medicine 03-08-2024.pptx
ZaheerAhmad228692
 
Business Ethics Teaching Materials for college
CynthiaCastillo40
 
RMMM.pdf make it easy to upload and study
sajedul2
 
O5-L3 Freight Transport Ops (International) V1.pdf
labyankof
 
Cell Types and Its function , kingdom of life
ClaireMangundayao1
 
The Healthy Child – Unit II | Child Health Nursing I | B.Sc Nursing 5th Semester
RAKESH SAJJAN
 
Basic Mud Logging Guide for educational purpose
wdandworks
 
Introduction_to_Human_Anatomy_and_Physiology_for_B.Pharm.pptx
chetansingh379583
 
Anesthesia in Laparoscopic Surgery in India
mohitsuren827
 
Cell Structure & Organelles in detailed.
DHANASHREESIVAKUMAR
 
Institutional Correction lecture only . . .
limvtheghins
 
TR - Agricultural Crops Production NC III.pdf
avgilmegino3
 
01-Introduction-to-Information-Management.pdf
PrinceIbarra
 

Classification of elements and periodicity in properties

  • 1. Classification of Elements and Periodicity in Properties 1. Which of the following elements will have the highest electron affinity? (a) Chlorine (b) Nitrogen (c) Phosphorus (d) Fluorine 2. Which of the following alkaline earth metals has highest ionic mobility in aqueous solution? (a) 2 Be  (b) 2 Ca  (c) 2 Ba  (d) 2 Mg  3. The element, with atomic number 118, will be (a) a transition element (b) an alkali metal (c) an alkaline earth metal (d) a noble gas 4. Which of the following has the maximum electronegativity? (a) C (b) F (c) N (d) O 5. In the 3 2 ,P S  and Cl ions, the increasing order of size is (a) 2 3 S Cl P     (b) 2 3 Cl S P     (c) 2 3 S P Cl     (d) 3 2 P S Cl     6. The electronic configuration 2 2 5 1 1 2 2 3s s p s shows (a) ground state of fluorine atom (b) excited state of fluorine atom (c) excited state of neon atom (d) excited state of ion 2O 7. Which of the following is the most electropositive element? (a) Phosphorus (b) Magnesium (c) Aluminium (d) Sulphur 8. Which of the following has maximum ionization potential? (a) Na (b) K (c) Be (d) Mg 9. Which of the following ions in aqueous solution is the best conductor of electricity? (a) Li (b) Na (c) 2 Mg  (d) Cs 10. Which of the following has highest second ionisation energy? (a) Ni (b) V (c) Cr (d) Mn 11. The pair of amphoteric hydroxides is (a)  3 ,Al OH LiOH (b)    2 2 ,Be OH Mg OH (C)    3 2 ,B OH Be OH (d)    2 2 ,Be OH Zn OH 12. Largest difference in radii is found in case of the pair (a) Li, Na (b) Na, K (c) K, Rb (d) Rb, Cs 13. The element Z=114 has been discovered recently. It will belong to which of the following family/group and electronic configuration? (a)Carbon family  14 10 2 2 5 6 7 7Rn f d s p (b)Oxygen family,   14 10 2 4 5 6 7 7Rn f d s p (c)Nitrogen family,  14 10 2 6 5 6 7 7Rn f d s p (d)Halogen family,  14 10 2 5 5 6 7 7Rn f d s p 14. The element, with atomic number 118, will be (a) alkali (b) noble gas (c) lanthanide (d)transition element
  • 2. 15. The electronic configuration of an element is 2 2 6 2 3 1 2 2 3 3s s p s p . What is the atomic number of the element, which is just below the above element in the periodic table? (a) 33 (b) 34 (c) 36 (d) 49 16. In which of the following options the order of arrangement does not agree with the variation of property indicated against it? (a) 3 2 Al Mg Na F       (increasing ionic size) (b) B < C < N < O (increasing first ionization enthalpy) (c) I < Br < Cl < F (increasing electron gain enthalpy) (d) Li < Na < K < Rb (increasing metallic radius) 17. The species Ar, K and 2 Ca  contain the same number of electrons. In which order do their radii increase? (a) 2 Ca Ar K    (b) 2 Ca K Ar    (c) 2 Ca Ar K    (d) 2 Ar K Ca    18. The formation of the oxide ion  2 ,O g from oxygen atom requires first an exothermic and then an endothermic step as shown below:     1 ; 141 kJ molfO g e O g H            2 1 ; 780 kJ molfO g e O g H          Thus process of formation of 2 O  in gas phase is unfavourable even though 2 O  is isoelectronic with neon. It is due to the fact that (a) Electron repulsion outweighs the stability gained by achieving noble gas configuration (b) O ion has comparatively smaller size than oxygen atom (c) Oxygen is more electronegative (d) Addition of electron in oxygen results in larger size of the ion. 19. Which one of the following arrangements represents the correct order of least negative to most negative electron gain enthalpy for C, Ca, Al, F and O? (a) Ca < Al < C < O < F (b) Al < Ca < O < C < F (c) Al < O < C < Ca < F (d) C < F < O < Al < Ca 20. What is the value of electron gain enthalpy of Na if 1E of Na = 5.1 eV? (a) 5.1 eV (b) 10.2 eV (c) + 2.55 eV (d) + 10.2 eV 21. Among the elements Ca, Mg, P and Cl, the order of increasing atomic radii is: (a) Ca < Mg < P < Cl (b) Mg < Ca < Cl < P (c) Cl < P < Mg < Ca (d) P < Cl < Ca < F 22. Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements O, S, F and Cl? (a) Cl < F < O < S (b) O < S < F < Cl (c) F < S < O < Cl (d) S < O < Cl < F 23. Amongst the elements with following electronic configurations, which one of them may have the highest ionization energy?
  • 3. (a) 2 2 3 3Ne s p   (b) 10 2 3 3 4 4Ar d s p   (c) 2 1 3 3Ne s p   (d) 2 3 3 3Ne s p   24. Which of the following electronic configuration of an atom has the lowest ionization enthalpy? (a) 2 2 3 1 2 2s s p (b) 2 2 5 1 1 2 2 3s s p s (c) 2 2 6 1 2 2s s p (d) 2 2 5 1 2 2s s p 25. Ionic radii are (a) inversely proportional to effective nuclear charge (b) inversely proportional to square of effective nuclear charge (c) directly proportional to effective nuclear charge (d) directly proportional to square of effective nuclear charge 26. Which of the following order is wrong? (a) 3 3 3NH PH AsH Acidic   (b) First IPLi Be B C    (c) 2 3 2 2Al O MgO Na O K O Basic    (d) Li Na K Cs Ionic radius        27. Correct order of first IP among following elements Be, B, C, N, O is (a) B < Be < C < O < N (b) Be < Be < C < N < O (c) Be < B < C < N < O (d) Be < B < C < O < N 28. The first ionization potentials (eV) of Be and B respectively are (a) 8.29, 9.32 (b) 9.32, 9.32 (c) 8.29, 8.29 (d) 9.32, 8.29 29. Which of the following does not represent the correct order of the properties indicated? (a) 2 2 2 2 Ni Cr Fe Mn       (size) (b) Sc > Ti > Cr > Mn (size) (c) 2 2 2 2 Mn Ni Co Fe       (unpaired electron) (d) 2 2 2 2 Fe Co Ni Cu       (unpaired electron) 30. Which one of the following ions will be the smallest in size? (a) Na (b) 2 Mg  (c) F (d) 2O 31. Among the following oxides, the one which is most basic is (a) ZnO (b) MgO (c) 2 3Al O (d) 2 5N O 32. The 1 2 3 4, , ,IP IP IP IP and 5IP of an element are 7.1, 14.3, 34.5, 46.8, and 162.2 eV respectively. The element is likely to be (a)Na (b) Si (c) F (d) Ca 33. Pd has exceptional valence shell electronic configuration of 10 0 4 5d s . It is a member of (a) 5th period, Group 10 (b) 4th Period, Group 12 (c) 6th Period, Group 10 (d) 5th Period, Group 14 34. The electronic configuration of an element is 2 2 6 2 4 1 ,2 2 ,3 3s s p s p . The atomic number of the element present just below the above element in the periodic table is (a) 36 (b) 34 (c) 33 (d) 32 35. Calculate the energy needed to convert three moles of sodium atoms in the gaseous state to sodium ions. The ionization energy of sodium is 495 1 kJ mol (a) 1485 kJ (b) 495 kJ (c) 148.5 kJ (d) None
  • 4. 36. The paramagnetic species among the following is 2 3 , , ,Na Zn Cu Fe    (a) Na (b) 2 Zn  (c) Cu (d) 3 Fe  37. The correct decreasing order of atomic size among the following species is: 2 2 , , , ,Ar K Cl S Ca    (a) 2 2 Ca K Ar Cl S        (b) 2 2 K Ca Cl Ar S        (c) 2 2 S Cl Ar K Ca        (d) 2 2 S Ar Cl Ca K        38. Which is correct in the following? (a) Radius of Cl atom is 0.99 o A , while that of Cl ion is 1.54 o A (b) Radius of Cl atom is 0.99 o A , while that of Na atom is 1.54 o A (c) Radius of Cl atom is 0.95 o A , while that of Cl ion is 0.81 o A (d) Radius of Na atom is 0.95 o A , while that of Na ion is 1.54 o A 39. Which oxide of N is isoelectronic with 2CO ? (a) 2NO (b) NO (c) 2N O (d) 2 3N O 40. Ionization potential of Na would be numerically the same as (a) Electron affinity of Na (b) Electronegativity of Na (c) Electron affinity of He (d) ionization potential of Mg 41. What should be the atomic number of the next halogen if discovered in future? (a) 115 (b) 119 (c) 117 (d) 121 42. The electronic configurations for some neutral atoms are given below: Which of these is expected to have the highest second ionization enthalpy? (a) 2 2 6 2 1 ,2 2 ,3s s p s (b) 2 2 6 1 1 ,2 2 ,3s s p s (c) 2 2 6 2 2 1 ,2 2 ,3 3s s p s p (d) 2 2 6 2 3 1 ,2 2 ,3 3s s p s p 43. The law of triads is applicable to (a) C, N, O (b) H, O, N (c) Na, K, Rb (d) Cl, Br, I 44. The law of triads is not applicable on (a) Cl, Br, I (b) Na, K, Rb (c) S, Se, Te (d) Ca, Sr, Ba 45. A given compound 2A whose total A Ad  is o 1.4 A . The atomic (covalent) radius of an atom A is (a) o 0.7 A (b) o 0.5 A (c) o 0.2 A (d) o 0.1 A 46. The ionic radius of Cr is minimum in which of the following compounds? (a) 3CrF (b) 3CrCl (c) 2 3Cr O (d) 2 4K CrO 47. Arrange 3 3 3 , ,Ce La Pm  and 3 Yb  in increasing order of their size (a) 3 3 3 3 Yb Pm Ce La      (b) 3 3 3 3 Ce Yb Pm La      (c) 3 3 3 3 Yb Pm La Ce      (d) 3 3 3 3 Yb Pm La Ce      Direction (Q. No – 48): In the following question, more than one of the answer given are correct. Select the correct answer and mark it according to the following codes: Codes: (i) a, b and c are correct (ii) a and b are correct (iii) b and d are correct (iv) a and c are correct
  • 5. 48. Choose the correct order of atomic radius (a) Li > Be > B > C > N > O > F (b) Li < Na < K < Rb < Cs (c) 2 3 4 Mn Mn Mn Mn      (d) 2 O O O    Directions (Q. No – 49, 50): Read the passage given below and answer the questions that follows: The tendency of an atom to attract shared pair of electrons towards itself is called electronegativity. EN and EA both have tendency to attract electrons but electron affinity is for isolated atoms, whereas electronegativity is for bonded atoms. A polar covalent or ionic bond of A – B may be broken as (a) :A B A B     (EN A > EN B) as (a) :A B A B     (EN A < EN B) 49. Which of the following compound has highest value of bond length? (a) CsF (b) CsBr (c) CsI (d) CsCl 50. The electronegativities of F and H are 4.0 and 2.1 respectively. The percent ionic character in H and F bond is (a) 43 (b) 34 (c) 94 (d) 39 51. Which of the following is not an actinoid? (a) Curium (Z = 96) (b) Californium (Z = 98) (c) Uranium (Z = 92) (d)Terbium (Z = 65) 52. Which of the following species has lowest ionization potential? (a) O (b) 2O (c) 2O (d) 2O 53. The decreasing order of the ionization potential of the following element is (a) Ne > Cl > P > S > Al > Mg (b) Ne > Cl > P > S > Mg > Al (c) Ne > Cl > S > P > Mg > Al (d) Ne > Cl > S > P > Al > Mg 54. The radii of , ,F F O and 2 O  are in the order (a) 2 O F F O     (b) 2 F O F O     (c) 2 O O F F     (d) 2 O F O F     55. Which ionization potential (IP) in the following equations involves the greatest amount of energy? (a) Na Na e    (b) 2 K K e     (c) 2 3 C C e     (d) 2 Ca Ca e     56. Which of the following arrangements represents the increasing order (smallest to largest) of ionic radii of the given species 2 2 3 3 , , ,O S N P    ? (a) 2 3 2 3 O N S P       (b) 2 3 3 2 O P N S       (c) 3 2 3 2 N O P S       (d) 3 2 2 3 N S O P       57. Which of the following order is wrong? (a) 3 3 3NH PH AsH  Acidic (b) Li < Be < B < C – IE1 (c) 2 3 2 2Al O MgO Na O K O    basic (d) Li Na K Cs        Ionic radius 58. Which of the following sequence correctly represents the decreasing acidic nature of oxides? (a) 2 2 3 2 2 3Li O BeO B O CO N O    (b) 2 3 2 2 3 2N O CO B O BeO Li O    (c) 2 2 3 2 3 2CO N O B O BeO Li O    (d) 2 3 2 2 3 2B O CO N O Li O BeO   
  • 6. 59. In which of the following arrangements, the sequences is not strictly according to the property written against it? (a) 2 2 2 2;CO SiO SnO PbO   increasing oxidizing power (b) 3 3 3 3;NH PH AsH SbH   increasing basic strength (c) HF < HCl < HBr < HI; increasing acid strength (d) B < C < O < N; increasing first ionization enthalpy 60. The ionic radii o in A       of 3 2 ,N O  and F are respectively (a) 1.71, 1.40 and 1.36 (b) 1.71, 1.36 and 1.40 (c) 1.36, 1.40 and 1.71 (d) 1.36, 1.71 and 1.40 61. Amongst 2 2 2, ,H O H S H Se and 2H Te, the one with the highest boiling point is (a) 2H Obecause of hydrogen bonding (b) 2H Te because of higher molecular weight (c) 2H S because of hydrogen bonding (d) 2H Sebecause of lower molecular weight 62. Match the Column – I and Column – II and select the correct answer by given codes. Column – I (Elements) Column – II (Properties) A. 3 2 Li Al Mg K       I. EA (Electron affinity) B. 3 2 Li Al Mg K       II. Ionic radii C. Cl > F > Br > I III. EN (Electronegativity) D. F > Cl > Br > I IV.Effective nuclear charge (a) A – II, B – IV, C – III, D – I (b) A – II, B – IV, C – I, D – III (c) A – IV, B – II, C – III, D – I (d) A – IV, B – II, C – I, D – III 63. The Van der Waal and covalent radii of fluorine atom respectively from the following figure are (a) 219pm, 72pm (b) 75pm, 72pm (c) 147pm, 72pm (d) 147pm, 144pm 64. Cl, Br, I, if this is Dobereiner’s triad and the atomic masses of Cl and I are 35.5 and 127 respectively the atomic mass of Br (a) 162.5 (b) 91.5 (c) 81.25 (d) 45.625 PERIOD, GROUP AND BLOCK 65. Which of the following set of elements belongs to same period: (a) Zn, Cd, Hg (b) Fr, Ra, U (c) K, Ca, Ag (d) None 66. Elements upto atomic number 112 have been discovered till now. What will be the electronic configuration of the element possessing atomic no. 108: (a)   14 6 2 5 6 7Rn f d s (b) 14 8 2 6 7 7f d s (c)  14 8 0 5 6 7Rn f d s (d)  14 8 2 4 5 6Xe f d s 67. In 6th period of the modern periodic table, electronic energy levels are in the order: (a) 6s, 4f, 5d, 6p(b) 6s, 6p, 4f, 5d
  • 7. (c) 4f, 5d, 6s, 6p(d) None 68. The element with atomic number Z = 118 will be: (a) Noble gas (b) Transition metal (c) Alkali metal (d) Alkaline earth metal 69. The atom having the valence shell electronic configuration 2 2 4 4s p would be in: (a) Group II A and period 3 (b) Group II B and period 4 (c) Group IV A and period 4 (d) Group IV A and period 3 70. The electronic configuration of d – block elements is exhibited by (a)  1 2 1 10 1ns n d   (b)  2 10 1ns n d (c)   10 2 1n d s (d) 2 5 ns np 71. Which of the following electronic configuration belongs to inert gas elements: (a)  2 10 1ns n d (b)  2 2 6 1ns n s p (c) 2 6 ns np (d) None 72. Total number of p block elements among given atomic number 83, 79, 42, 64, 37, 54, 34 (a) 3 (b) 4 (c) 5 (d) 6 Zeff, SCREENING CONSTANT & ATOMIC RADIUS 73. The formula for effective nuclear charge is (if σ is screening constant) (a) Z – σ (b) Z + σ (c) Z σ –1 (d) Z σ 74. Effective nuclear charge in group generally (a) Increases down the group (b) Decreases down the group (c) Remains constant (d) First increases than decreases 75. In sodium atom the screening is due to: (a) 2 6 3 ,3s p (b) 1 2s (c) 2 2 6 1 ,2 ,2s s p (d) 2 2 1 ,2s s 76. The correct order of size would be (a) Ni < Pd ~ Pt (b) Pd < Pt < Ni (c) Pt > Ni > Pd (d) Pd > Pt > Ni 77. Which of the following is not isoelectronic series (a) 3 , ,Cl P Ar  (b) 3 2 , ,N Ne Mg  (c) 3 , ,B He Li  (d) 3 2 , ,N S Cl   78. Which group of atoms have nearly same atomic radius? (a) Na, K, Rb, Cs (b) Li, Be, B, C (c) Fe, Co, Ni (d) F, Cl, Br, I 79. Atomic radii of Fluorine and Neon in Angstrom units are given by (a) 0.72, 1.60 (b) 1.60, 1.60 (c) 0.72, 0.72 (d) None of these 80. Which of the following has largest radius: (a) 2 2 6 2 1 2 2 3s s p s (b) 2 2 6 2 1 1 2 2 3 3s s p s p (c) 2 2 6 3 1 2 2 3s s p p (d) 2 2 6 2 5 1 2 2 3 3s s p s p 81. Correct order of ionic radii is (a) 4 7 Ti Mn   (b) 35 37 Cl Cl   (c) K Cl   (d) 3 5 P P   82. The radius of potassium atom is 0.203 nm. The radius of the potassium ion in nanometer will be (a) 0.133 (b) 0.231 (c) 0.234 (d) 0.251 83. 2 S is not isoelectronic with
  • 8. (a) Ar (b) Cl (c) HS (d) 3 Ti 84. Maximum size of first member of a period is due to (a) Maximum number of shells (b) Maximum screening effect (c) Minimum Zeff (d) All 85. In which of the following pair radii of second species is smaller than that of first species? (a) Li, Na (b) ,Na F  (c) 3 3 ,N Al  (d) 7 4 ,Mn Mn  86. Spot the incorrect order of atomic radii: (a) Cu Znr  (b) Cl Fr  (c) P Sr  (d) Sc Tir  87. Which of the following orders of atomic radii are correct? (A) Li < Be < Na(B) Ni < Cu < Zn (C) Ti > V > Cr (D) Ti > Zr ~ Hf (a) All (b) A, B (c) B, C (d) B, D 89. Decreasing order of size of ions is: (a) 2 3 Br S Cl N       (b) 3 2 N S Cl Br       (c) 2 3 Br Cl S N       (d) 3 2 N Cl S Br       90. The covalent and Vander Waals radii of hydrogen respectively are (a) 0.37 o A , 0.8 o A (b) 0.37 o A , 0.37 o A (c) 0.8 o A , 0.8 o A (d) 0.8 o A , 0.37 o A 91. Which of the following sequence is correct for decreasing order of ionic radius (a) 2 2 , , , ,Se I Br O F     (b) 2 2 , , , ,I Se O Br F     (c) 2 2 , , , ,Se I Br F O     (d) 2 2 , , , ,I Se Br O F     92. Incorrect order of ionic radius is (a) 3 3 3 3 La Gd Eu Lu       (b) 2 3 4 5 V V V V       (c) 2 3 ln Sn Sb     (d) 3 5 7 K Sc V Mn       IONISATION POTENTIAL 93. Correct order of Ist I.P. are: (A) Li < B < Be < C (B) O < N < F (C) Be < N < Ne (a) A, B (b) B, C (c) A, C (d) A, B, C 94. The ionisation potential of isotopes of an element will be (a) Same (b) Different (c) Depends on atomic masses (d) Depends on number of neutrons 95. A sudden large jump between the values of 2nd and 3rd IP of an element would be associated with the electronic configuration: (a) 2 2 6 1 1 ,2 2 ,3s s p s (b) 2 2 6 2 5 1 ,2 2 ,3 3s s p s p (c) 2 2 6 2 5 1 ,2 2 ,3 3s s p s p (d) 2 2 6 2 1 ,2 2 ,3s s p s 96. Compared to the first ionisation potential, the value of second ionization potential of an element is (a) Negligible (b) Smaller (c) Greater (d) Double 97. In which of the following pairs, the ionization energy of the first species is less than that of the second:
  • 9. (a) ,O O (b) ,S P (c) N, P (d) ,Be Be 98. The correct order of stability of 2 3 , ,Al Al Al   is (a) 3 2 Al Al Al     (b) 2 3 Al Al Al     (c) 2 3 Al Al Al     (d) 3 2 Al Al Al     99. Minimum first ionisation energy is shown by which electronic configuration (a) 2 2 5 1 2 2s s p (b) 2 2 6 2 2 1 2 2 3 3s s p s p (c) 2 2 6 1 1 2 2 3s s p s (d) 2 2 6 1 2 2s s p 100. Successive ionization energies of an element ‘X’ are given below (in K. cal) 1IP 2IP 3IP 4IP 165 195 556 595 Electronic configuration of the element ‘X’ is: (a) 2 2 6 2 2 1 ,2 2 ,3 3s s p s p (b) 2 1 1 ,2s s (c) 2 2 2 1 ,2 2s s p (d) 2 2 6 2 1 ,2 2 ,3s s p s 101. The correct order of decreasing first ionization energy is (a) Si > Al > Mg > Na (b) Si > Mg > Al > Na (c) Al > Si > Mg > Na (d) Mg > Li > Al > Si 102. The strongest reducing agent among the following us: (a) Na (b) Mg (c) Al (d) K 103. Which ionisation potential (IP) in the following equations involves the greatest amount of energy (a) 2 K K e     (b) 2 Li Li e     (c) Fe Fe e    (d) 2 Ca Ca e     104. The correct values of ionisation energies (in kJ 1 mol ) of Be, Ne, He and N respectively are (a) 786, 1012,999, 1256 (b) 1012, 786, 999, 1256 (c) 786, 1012, 1256, 999 (d) 786, 999, 1012, 1256 ELECTRON AFFINITY 105. In which case the energy released is minimum? (a) Cl Cl  (b) B B  (c) N N  (d) C C  106. Process in which maximum energy is released? (a) 2 O O  (b) 2 Mg Mg   (c) Cl Cl  (d) F F  107. Which of the following is energy releasing process (a)  X X g e    (b)   2 O g e O     (c)    O g O g e    (d)    O g e O g    108. In which of the following process energy is liberated: (a) Cl Cl e   (b) HCl H Cl    (c) Cl e Cl   (d) 2 O e O    109. Element of which atomic number has highest electron affinity
  • 10. (a)35 (b) 17 (c) 9 (d) 53 110. The electron affinity (a) Of carbon is greater than oxygen (b) Of fluorine is less than iodine (c) Of fluorine is less than chlorine (d) Of sulphur is less than oxygen 111. Which of the following element will form most stable bivalent anion (a) 2 0 2 2s p (b) 2 2 2 2s p (c) 2 3 2 2s p (d) 2 1 2 2s p 112. The correct set of decreasing order of electronegativity is (a) Li, H, Na (b) Na, H, Li (c) H, Li, Na (d) Li, Na, H 113. The pair with minimum difference in electronegativity is (a) F, Cl (b) C, H (c) P, H (d) Na, Cs 114. Among the following least and most polar bonds are respectively (A) C – I (B) N – O (C) C – F (D) P – F (a) D and C (b) A and D (c) B and D (d) B and C 115. Electronegativity of an element can be measured using: (a) Pauling’s scale (b) Mulliken’s scale (c) Both (d) None 116. The electronegativities of the following elements: H, O, F, S and Cl increase in the order (a) H < O < F < S < Cl (b) Cl < H < O < F < S (c) H < S < O < Cl < F (d) H < S < Cl < O < F 117. Which of the following is different from other three oxides (a) MgO (b) SnO (c) PbO (d) ZnO 118. Which of the following diagrams is correctly related to electron affinity of halogens (a) (b) (c) (d) 119. Elements of which group form anions most readily? (a) Oxygen family (b) Nitrogen group (c) Halogens (d) Alkali metals 120. Which is the weakest base among NaOH,  2 Ca OH , KOH and  2 Zn OH (a) NaOH (b) KOH (c)  2 Ca OH (d)  2 Zn OH 121. If electronegativity values of element X and Y are 3.8 and 1.8 respectively, then percentage of ionic character in compound XY is: (a) 50 (b) 46 (c) 64 (d) 36 122. The outer electron configuration of Gd (Atomic No: 64) is (a) 4 4 2 4 5 6f d s (b) 7 1 2 4 5 6f d s (c) 3 5 2 4 5 6f d s (d) 8 0 2 4 5 6f d s
  • 11. 123. The correct order of electron gain enthalpy with negative sign of F, Cl, Be and I, having atomic number 9, 17, 35 and 53 respectively, is (a) I > Br > Cl > F (b) F > Cl > Br > I (c) Cl > F > Br > I (d) Br > Cl > I > F 124. For electron affinity of halogens which of the following is correct? (a) Br > F (b) F > Cl (c) Br > Cl (d) F > I 125. The pair of amphoteric hydroxide is (a)  3 ,Al OH LiOH (b)    2 2 ,Be OH Mg OH (c)    3 2 ,Be OH Be OH (d)    2 2 ,Be OH Zn OH 126. Identify the least stable ion amongst the following (a) Li (b) Be (c) B (d) C 127. Amongst Be, B, Mg and Al, the second ionization potential is maximum for (a) B (b) Be (c) Mg (d) Al 128. In the 3rd period, the first ionization potential is of the order? (a) Na > Mg > Al > Si > P (b) Mg > Na > Si > P > Al (c) Na < Mg < Al < Si < P (d) Na < Al < Mg < Si < P 129. The size of ionic species is correctly given in order? (a) 7 4 2 Cl Si Mg Na       (b) 2 4 7 Na Mg Si Cl       (c) 2 7 4 Na Mg Cl Si       (d) 7 2 4 Cl Na Mg Si       130. Which one of the following statements is false? (a) The electron affinity of chlorine is less than that of fluorine (b) The electronegativity of fluorine is more than that of chlorine (c) The electron affinity of bromine is less than that of chlorine (d) The electronegativity of chlorine is more than that of bromine. 131. The set representing the correct order for first ionization potential is (a) K > Na > Li (b) Be > Mg > Ca (c)B > C > N (d) Ge > Si > C
  • 12. Answer Keys 1. (a) 2. (c) 3. (d) 4. (b) 5. (b) 6. (c) 7. (b) 8. (c) 9. (d) 10. (c) 11. (d) 12. (b) 13. (a) 14. (b) 15. (a) 16. (b) 17. (b) 18. (a) 19. (a) 20. (a) 21. (c) 22. (b) 23. (d) 24. (b) 25. (a) 26. (b) 27. (a) 28. (d) 29. (a) 30. (b) 31. (b) 32. (b) 33. (a) 34. (b) 35. (a) 36. (d) 37. (c) 38. (b) 39. (c) 40. (a) 41. (c) 42. (b) 43. (d) 44. (b) 45. (a) 46. (d) 47. (a) 48. (a) 49. (c) 50. (a) 51. (d) 52. (d) 53. (b) 54. (d) 55. (b) 56. (a) 57. (b) 58. (b) 59. (b) 60. (a) 61. (a) 62. (b) 63. (c) 64. (c) 65. (b) 66. (a) 67. (a) 68. (a) 69. (c) 70. (a) 71. (a) 72. (c) 73. (a) 74. (a) 75. (c) 76. (c) 77. (a) 78. (d) 79. (c) 80. (a) 81. (a) 82. (d) 83. (a) 84. (d) 85. (c) 86. (c) 87. (a) 88. (c) 89. (a) 90. (a) 91. (d) 92. (a) 93. (d) 94. (a) 95. (d) 96. (c) 97. (b) 98. (d) 99. (c) 100. (d) 101. (b) 102. (d) 103. (b) 104. (c) 105. (c) 106. (c) 107. (d) 108. (c) 109. (b) 110. (c) 111. (b) 112. (c) 113. (c) 114. (b) 115. (c) 116. (d) 117. (a) 118.(c) 119. (c) 120. (d) 121. (b) 122. (b) 123. (c) 124. (d) 125. (d) 126. (b) 127. (a) 128. (d) 129. (b) 130. (a) 131. (b)