Chemistry 9701 · 1 Atomic structure
1.1 Particles in the atom and atomic radius
Describe subatomic particles (protons, neutrons, electrons), their properties, behavior in electric fields, and trends in atomic and ionic radii.
- Questions
- 96
- Years
- 2015–2026
- Multiple choice
- 79
- Written answer
- 17
- Average marks
- 2.3
Practise atomic structure questions with instant markingTeachers: build a worksheet from past papers
Where this subtopic appears
- Paper 1variants 11, 12, 1379
- Paper 2variants 21, 22, 2310
- Paper 3variants 346
- Paper 4variants 421
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | – | 7 | – | 7 |
| 2023 | 2 | 6 | 5 | 13 |
| 2022 | – | 10 | 3 | 13 |
| 2021 | 2 | 3 | 2 | 7 |
| 2020 | 1 | 4 | 4 | 9 |
| 2019 | – | 5 | 2 | 7 |
| 2018 | 1 | 4 | 3 | 8 |
| 2017 | – | 7 | 2 | 9 |
| 2016 | 2 | 5 | 6 | 13 |
| 2015 | – | 6 | 4 | 10 |
