DP Chemistry (last assessment 2024)
Question 22M.2.sl.TZ1.2b
| Date | May 2022 | Marks available | [Maximum mark: 1] | Reference code | 22M.2.sl.TZ1.2b |
| Level | sl | Paper | 2 | Time zone | TZ1 |
| Command term | Draw | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 1]
22M.2.sl.TZ1.2b
Ammonia, NH3, is industrially important for the manufacture of fertilizers, explosives and plastics.
(b)
Draw the Lewis (electron dot) structure of the ammonia molecule.
[1]
Markscheme
Accept lines or dots or crosses for electrons, or a mixture of these
Examiners report
Even more candidates could draw the correct Lewis structure of ammonia, with omission of the lone pair being the most common error.
