DP Chemistry (last assessment 2024)
Question 22M.2.hl.TZ1.1e(ii)
| Date | May 2022 | Marks available | [Maximum mark: 1] | Reference code | 22M.2.hl.TZ1.1e(ii) |
| Level | hl | Paper | 2 | Time zone | TZ1 |
| Command term | State | Question number | e(ii) | Adapted from | N/A |
e(ii).
[Maximum mark: 1]
22M.2.hl.TZ1.1e(ii)
When heated in air, magnesium ribbon reacts with oxygen to form magnesium oxide.
Most nitride ions are 14N3–.
(e(ii))
Some nitride ions are 15N3–. State the term that describes the relationship between 14N3– and 15N3–.
[1]
Markscheme
isotope«s» ✔
Examiners report
Exceptionally well done; A few candidates referred to isomers, rather than isotopes.
