All compounds of alkali metals are easily soluble in water,but lithium compounds are more soluble in organic solvents. Explain.

(N/A) The $Li^+$ ion has the smallest size among alkali metal ions and possesses high polarizing power,which imparts significant covalent character to its compounds according to Fajan's rule. Due to this covalent nature,lithium compounds are more soluble in organic solvents. In contrast,other alkali metal compounds are predominantly ionic and are therefore highly soluble in water.