NEET Chemistry The s-Block Elements Questions Solved


Consider the following statements and pick out the wrong one.

(1) The solubility, thermal stability, and the basic character of the hydroxides of alkaline earth

      metals increases from MgOH2 to BaOH2.

(2) The dehydration of hydrated chlorides, bromides, bromides and iodides of Ca, Sr and Ba can be

      achieved on heating.

(3) The chlorides of both beryllium and aluminium are soluble in organic solvents and are strong

      Lewis acids.

 

(A) (1) and (2) only                                     

(B) (1) and (3) only

(C) (1), (2) and (3)                                     

(D) none

(C)

     (1) The solubility increases down the group because the change in lattice energy is more as compared

           to hydration energy. Thermal stability and the basic character both increase down the group as

           metallic character increases.

      (2) It is a correct statement.

      (3) Beryllium and aluminium are diagonally related. Chlorides of both are covalent in nature and

           thus are soluble in organic solvents. Chlorides of both are electron deficient and thus act as

           strong Lewis acids.

Difficulty Level:

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