Chemistry 9701 · 9 The Periodic Table: chemical periodicity
9.1 Periodicity of physical properties of the elements in Period 3
Describe and explain trends in atomic/ionic radius, melting point, and electrical conductivity across Period 3.
- Questions
- 98
- Years
- 2015–2026
- Multiple choice
- 84
- Written answer
- 14
- Average marks
- 2.8
Practise the periodic table: chemical periodicity questions with instant markingTeachers: build a worksheet from past papers
Where this subtopic appears
- Paper 1variants 11, 12, 13, 1484
- Paper 2variants 21, 22, 23, 2413
- Paper 4variants 411
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | – | 9 | – | 9 |
| 2023 | 1 | 5 | 7 | 13 |
| 2022 | 2 | 4 | 6 | 12 |
| 2021 | 1 | 4 | 2 | 7 |
| 2020 | – | 2 | 4 | 6 |
| 2019 | – | 6 | 6 | 12 |
| 2018 | 1 | 5 | 4 | 10 |
| 2017 | 2 | 5 | 6 | 13 |
| 2016 | 2 | 3 | 3 | 8 |
| 2015 | – | 2 | 6 | 8 |
