DP Chemistry (last assessment 2024)
Question 20N.1.sl.TZ0.23
| Date | November 2020 | Marks available | [Maximum mark: 1] | Reference code | 20N.1.sl.TZ0.23 |
| Level | sl | Paper | 1 | Time zone | TZ0 |
| Command term | Deduce | Question number | 23 | Adapted from | N/A |
23.
[Maximum mark: 1]
20N.1.sl.TZ0.23
What are the oxidation states of oxygen?
[1]
Markscheme
C
Examiners report
Less than 50% of candidates could correctly identify the oxidation of oxygen in various compounds, with the greatest misconception being oxygen still had a −2 charge in OF2.