`LiF` a least soluble among the fluorides of alkali metals, because

The solubility of fluorides of alkali metals in water is

Compounds of alkaline earth metals are generally less soluble in water than that of alkali metals because of:-

Compounds of alkaline earth metals are generally less soluble in water than that of alkali metals because of:-

Frenkel defect is not found in the halides of alkali metals because alkali metals have:

Enthalpy of formation values for fluorides of alkali metals become