Among the following alkaline earth metal halides, one which is covalent and soluble in organic solvents is:
(1) Calcium chloride
(2) Strontium chloride
(3) Magnesium chloride
(4) Beryllium chloride

Answer is (4)

Except for beryllium chloride, all other chloride of alkaline earth metals are ionic in nature.

Due to small size of Be, Beryllium chloride is essentially covalent and soluble in organic solvents.