Among the statements (a)-(d) the correct ones are:
(a) Lithium has the highest hydration enthalpy among the alkali metals.
(b) Lithium chloride is insoluble in pyridine.
(c) Lithium cannot form ethynide upon its reaction with ethyne.
(d) Both lithium and magnesium react slowly with $\mathrm{H}_{2} \mathrm{O}$.
Correct Option: , 3
Lithium has highest hydration enthalpy among alkali metals due to its small size.
$\mathrm{LiCl}$ is soluble in pyridine because $\mathrm{LiCl}$ have more covalent character.
Li does not form ethynide with ethyne.
Both $\mathrm{Li}$ and $\mathrm{Mg}$ reacts slowly with $\mathrm{H}_{2} \mathrm{O}$
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