# NEET Chemistry The s-Block Elements Questions Solved

Assertion :  As the electropositive character increases down the group, the stability of carbonates and hydrogen carbonates of alkali metals increases.

Reason :  Lithium carbonates is not so stable to heat : lithium being very small in size polarises a large $C{O}_{3}^{-2}$ ion leading to the formation of more stable $L{i}_{2}O$ and $C{O}_{2}$

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