Edexcel IAL Chemistry A2 17.1 transition metal definition
Edexcel IAL Chemistry A2 17.1 transition metal definition
Do not classify by d-block position alone: use the stable-ion definition to explain why zinc or mercury may be d-block but not transition elements.
How this is tested
- Classify transition metals by stable ions with incompletely filled d orbitals.
- Explain why zinc or mercury can be d-block elements but not transition elements.