Thermal stability of hydrides MH₃ (Thermal stability of Group 15 hydrides decreases down the group: NH₃ most stable, BiH₃)
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Thermal stability of Group 15 hydrides decreases down the group: NH₃ most stable, BiH₃ least.
What each symbol means
| Symbol | What it stands for |
|---|---|
| M | Group 15 element |
When to use this
Bond strength M–H decreases as size mismatch increases; lone pair on central atom affects basicity separately.