DP Chemistry (last assessment 2024)
Question 19M.1.hl.TZ1.8
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.1.hl.TZ1.8 |
| Level | hl | Paper | 1 | Time zone | TZ1 |
| Command term | Question number | 8 | Adapted from | N/A |
8.
[Maximum mark: 1]
19M.1.hl.TZ1.8
Which electrons are removed from iron (Z = 26) to form iron(II)?
A. two 3d electrons
B. two 4s electrons
C. one 4s electron and one 3d electron
D. two 4p electrons
[1]
Markscheme
B
Examiners report
Stating the 4s electrons are lost first in forming the Fe(II) ion was done correctly by 58 % but with a low discrimination index.