Chemistry 9701 · 1 Atomic structure
1.3 Electrons, energy levels and atomic orbitals
Describe shells, sub-shells, orbitals, electronic configurations, orbital shapes (s and p), and define free radicals.
- Questions
- 88
- Years
- 2015–2026
- Multiple choice
- 55
- Written answer
- 33
- Average marks
- 5.2
Practise atomic structure questions with instant markingTeachers: build a worksheet from past papers
Where this subtopic appears
- Paper 1variants 11, 12, 13, 1455
- Paper 4variants 41, 42, 4320
- Paper 2variants 21, 22, 23, 2413
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | – | 4 | – | 4 |
| 2024 | – | – | 1 | 1 |
| 2023 | – | 3 | – | 3 |
| 2022 | 2 | 6 | 3 | 11 |
| 2021 | 1 | 2 | 6 | 9 |
| 2020 | 2 | 4 | 5 | 11 |
| 2019 | 2 | 5 | 1 | 8 |
| 2018 | 2 | 5 | 5 | 12 |
| 2017 | 2 | 1 | 3 | 6 |
| 2016 | 2 | 8 | 3 | 13 |
| 2015 | – | 3 | 7 | 10 |
