27.1 · Group 2: two competing energy changesLesson 3 of 3
Group 2 extension: exam question
A concise Paper 4 comparison requiring both polarisation language and the lattice–hydration energy balance.
Locked
Unlock the rest of A2 Chemistry: Transition Elements (9701).
- Every lesson, every resource, unlocked instantly.
- Track progress and pick up where you left off.
- Free preview lessons stay readable from the outline.