Question

Which of the following radicals are bivalent?

• A. Hydrogen phosphate
• B. Sulphate
• C. Perchlorate
• D. Nitride

Answer 1

Answer: (A), (B)

The correct options are
A Hydrogen phosphate
B Sulphate

(A) Hydrogen phosphate:- $HP{O}_4^{-2}$

It is bivalent as it can form $2$ bonds with other univalent atom or bivalent atom.

Example:- (Refer to Image 1)

(B) Sulphate $\left(S{O}_4^{-2}\right)$

Sulphate is bivalent as it can form the bond with two univalent atom like Hydrogen or one bivalent atom like Calcium.

Example:- (Refer to Image 2)