Halides of alkaline earth metals from hydrates such as MgCl2. 6H2O, CaCl2. 6H2O, BaCl2. 2H2O and SrCl2. 2H2O. This shows that halides of group 2 elements

(A) Are hydroscopic in nature

(B) Act as dehydrating agents

(C) Can absorbs moisture from air

(D) All of these

Ans. D

Sol. Water of crystallization µ polorisation power of cation. These salt can absorbed water molecules from atmosphere.