Assertion : Lithium carbonate is not so stabl | vedclass

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(A) Lithium carbonate $(Li_2CO_3)$ is thermally unstable compared to other alkali metal carbonates.Due to the very small size of the $Li^+$ ion,it has

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(A) Lithium carbonate $(Li_2CO_3)$ is thermally unstable compared to other alkali metal carbonates.Due to the very small size of the $Li^+$ ion,it has a high polarizing power.It polarizes the large $CO_3^{2-}$ ion,which weakens the $C-O$ bond and facilitates the decomposition into the more stable oxide $Li_2O$ and carbon dioxide gas $(CO_2)$: $Li_2CO_3 \xrightarrow{\Delta} Li_2O + CO_2$.

Assertion : Lithium carbonate is not so stable to heat.
Reason : Lithium being very small in size polarizes large $CO_3^{2-}$ ion leading to the formation of more stable $Li_2O$ and $CO_2$.

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Assertion : Lithium carbonate is not so stable to heat.Reason : Lithium being very small in size polarizes large $CO_3^{2-}$ ion leading to the formation of more stable $Li_2O$ and $CO_2$.