Periodic table questions
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The document discusses trends in the periodic table by providing multiple choice questions about ionic radii, quantum numbers, and atomic properties. It asks about the number of quantum numbers needed to define orbitals in phosphorus atoms, how the ionic radius of O2- is known, commonalities between Neon and other ions, the order of halide ionic radii, and atomic radii of pairs of elements. The questions are intended to facilitate peer instruction on open educational resources about periodic table trends.
Periodic table questions
- 1. Trends in the Periodic Table
- 2. Why share questions? • There are many excellent open educational resources on the internet. • These include many videos of more-or-less traditional university lecturing. • These questions have been provided on a CC-BY basis to facilitate peer instruction.
- 3. How many quantum numbers are required to define the highest energy occupied orbitals in phosphorus atoms? A. 1 B. 2 C. 3 D. 4 1 2 3 4 0% 0%0%0%
- 4. How do we know the ionic radii of O2− is 1.40 Å? A. Distance measurements of compounds with oxygen and a more electronegative element B. Halving the O2 bond length C. Distance measurements of lattices with oxygen and a more electropositive element D. From the atomic radius of isoelectric Ne. A. B. C. D. 0% 0%0%0%
- 5. What do the ions O2-, F- Na+ and Mg2+ have in common with atomic Neon (Ne)? A. Pretty Colours? B. Similar radii? C. High solubility in water? D. They have the same number of electrons? Pretty Colours? Sim ilarradii? High solubilityin w ater? They have the sam e num ber... 0% 0%0%0%
- 6. Which of these is the correct order for the ionic radii of the halide ions? A. I- > F- > Br- > Cl- B. I- < Br- < Cl- < F- C. Li+ < Na+ < K+ < Rb+ < Cs+ D. F- < Cl- < Br- < I- I-> F-> Br-> Cl- I-< Br-<Cl-< F- Li+ < Na+ < K+ < Rb+ < Cs+ F-< Cl-< Br-< I- 0% 0%0%0%
- 7. Which of the following pairs of elements are closest in atomic radii? A. Carbon and Phosphorus B. Nitrogen and Silicon C. Bromine and Barium D. Carbon and Silicon Carbon and PhosphorusNitrogen and SiliconBrom ine and Barium Carbon and Silicon 0% 0%0%0%