DP Chemistry (last assessment 2024)
Question 20N.2.hl.TZ0.1a(iii)
| Date | November 2020 | Marks available | [Maximum mark: 2] | Reference code | 20N.2.hl.TZ0.1a(iii) |
| Level | hl | Paper | 2 | Time zone | TZ0 |
| Command term | Outline | Question number | a(iii) | Adapted from | N/A |
a(iii).
[Maximum mark: 2]
20N.2.hl.TZ0.1a(iii)
Chlorine undergoes many reactions.
(a(iii))
Outline why the chlorine atom has a smaller atomic radius than the sulfur atom.
[2]
Markscheme
has a greater nuclear charge/number of protons/ «causing a stronger pull on the outer electrons» ✔
same number of shells
OR
same «outer» energy level
OR
similar shielding ✔
Examiners report
Fairly well answered though some candidates missed M2 for not recognizing the same number of shells affected.
