Covalent bonding revision
Download as PPTX, PDF0 likes354 views
When two hydrogen atoms approach each other, the electron of one atom and the nucleus of the other start to attract each other. If the atoms get close enough, these attractions become so strong that a hydrogen molecule (H2) is formed, with the atoms held together by the shared attraction between their nuclei and pair of electrons, forming a single covalent bond. Covalent bonds involve the sharing of electron pairs between atoms, and molecules have definite shapes that chemists represent using lines between element symbols.
1 of 5
Download to read offline
More Related Content
What's hot (19)
Ad
Viewers also liked (17)
Ad
Recently uploaded (20)
Covalent bonding revision
- 2. • When two hydrogen atoms approach each other . . . • . . . the electron of one atom and the nucleus of the other atom start to attract each other.
- 3. • When the atoms are close, the attractions are so strong that a molecule of hydrogen (H2) is formed. • The atoms are held together by the attractions between the two nuclei and the shared pair of electrons. This is a single covalent bond.
- 4. water methane Molecules have a definite shape. ethene methanol
- 5. H—H O O N N hydrogen, H2 oxygen, O2 nitrogen, N2 O H H water, H2O H H—C—H H methane, CH4 Chemists draw a line between element symbols to show a covalent bond. O C O carbon dioxide, CO2 H H H—C—C—O—H H H ethanol, C2H5OH