Chemistry 9701 · 28 Chemistry of transition elements
28.1 General physical and chemical properties of the first row of transition elements, titanium to copper
Define transition elements, sketch d-orbitals, and explain variable oxidation states, catalytic behavior, and complex ion formation.
- Questions
- 47
- Years
- 2015–2026
- Multiple choice
- 18
- Written answer
- 29
- Average marks
- 7.1
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Where this subtopic appears
- Paper 4variants 41, 42, 4329
- Paper 1variants 11, 12, 1318
Questions by year
| Year | Feb/March | May/June | Oct/Nov | Total |
|---|---|---|---|---|
| 2026 | – | 5 | – | 5 |
| 2023 | – | 1 | – | 1 |
| 2022 | 1 | 3 | 1 | 5 |
| 2021 | 1 | 1 | – | 2 |
| 2020 | 1 | 5 | – | 6 |
| 2019 | – | – | 2 | 2 |
| 2018 | – | – | 7 | 7 |
| 2017 | 1 | 1 | 3 | 5 |
| 2016 | – | 2 | 7 | 9 |
| 2015 | – | 1 | 4 | 5 |
