Thermal stability of Group 2 carbonates (Thermal stability of alkaline earth carbonates increases down the group (BeCO₃ least)
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Thermal stability of alkaline earth carbonates increases down the group (BeCO₃ least stable, BaCO₃ most stable).
What each symbol means
| Symbol | What it stands for |
|---|---|
| M | Alkaline earth metal |
| Δ | On heating |
When to use this
Larger cation stabilizes carbonate ion against decomposition; polarizing power of M²⁺ decreases down the group.