Chemistry 9701 · 27 Group 2
27.1 Similarities and trends in the properties of the Group 2 metals, magnesium to barium, and their compounds
Explain trends in thermal stability of nitrates/carbonates and solubility of hydroxides/sulfates using lattice and hydration energies.
- Questions
- 30
- Years
- 2015–2026
- Multiple choice
- 7
- Written answer
- 23
- Average marks
- 7.9
Where this subtopic appears
- Paper 4variants 41, 42, 43, 4422
- Paper 1variants 11, 12, 137
- Paper 2variants 211
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | – | 2 | – | 2 |
| 2023 | – | 2 | – | 2 |
| 2022 | – | 1 | 2 | 3 |
| 2021 | 1 | 3 | 2 | 6 |
| 2020 | 1 | 2 | 2 | 5 |
| 2018 | 1 | 3 | – | 4 |
| 2016 | – | 1 | 4 | 5 |
| 2015 | – | 1 | 2 | 3 |
