DP Chemistry (last assessment 2024)
Question 18M.2.hl.TZ2.7c.i
| Date | May 2018 | Marks available | [Maximum mark: 2] | Reference code | 18M.2.hl.TZ2.7c.i |
| Level | hl | Paper | 2 | Time zone | TZ2 |
| Command term | Calculate | Question number | c.i | Adapted from | N/A |
c.i.
[Maximum mark: 2]
18M.2.hl.TZ2.7c.i
Some physical properties of molecular substances result from the different types of forces between their molecules.
Resonance structures exist when a molecule can be represented by more than one Lewis structure.
(c.i)
Carbon dioxide can be represented by at least two resonance structures, I and II.
Calculate the formal charge on each oxygen atom in the two structures.
[2]
Markscheme
Award [1] for any two correctly filled cells.
[2 marks]