# NEET Chemistry The s-Block Elements Questions Solved

Which one of the following about compounds of lithium is false –

(A) The hydroxide, carbonate, nitrate decomposed to give the oxide on heating

(B) It is the most electronegative element of group IA

(C) The hydrogen carbonate cannot be isolated as a stable solid

(D) It forms  a superoxide

(D). Lithium forms an oxide $L{i}_{2}O$, but not the peroxide or super oxide, because strong polarising power of small sized $L{i}^{+}$ ion is strong enough to restrict the oxidation of an oxide ion ${O}^{2-}$ to the peroxide ion, ${O}_{2}^{2-}$.

Difficulty Level:

• 8%
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• 67%
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