Q.

Select the correct statement(s).

Moderate

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NaOH does not form hydrated salt

Stability of peroxides and superoxides of alkali metals increases with increase in size of the metal ion

Stability of MO2 and M2O2 is due to stabilisation of larger anions by larger cations through lattice energy effects

The low solubility of LiF is due to its high lattice energy whereas low solubility of CsI is due to relatively smaller hydration energy

answer is B.

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Detailed Solution

(1) NaOH is crystalline deliquescent solid hence, it forms hydrated salt.Thus, it is incorrectperoxides and superoxides have larger anions hence they stablize only with larger cations

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