DP Chemistry (last assessment 2024)
Question 21M.2.hl.TZ1.d(iv)
| Date | May 2021 | Marks available | [Maximum mark: 1] | Reference code | 21M.2.hl.TZ1.d(iv) |
| Level | hl | Paper | 2 | Time zone | TZ1 |
| Command term | Outline | Question number | d(iv) | Adapted from | N/A |
d(iv).
[Maximum mark: 1]
21M.2.hl.TZ1.d(iv)
Iron may be extracted from iron (II) sulfide, FeS.
Iron (II) sulfide, FeS, is ionically bonded.
Outline, in terms of their electronic structures, why the ionic radius of the sulfide ion is greater than that of the oxide ion.
[1]
Markscheme
«valence» electrons further from nucleus/extra electron shell/ electrons in third/3s/3p level «not second/2s/2p»✔
Accept 2,8 (for O2–) and 2,8,8 (for S2–)
