Strong reducing behaviour of `H_3PO_2` is due to :

Options

A. High oxidation state of phosphorus.
B. Presence of two -OH groups and one P - H bond.
C. Presence of one -OH group and two P - H bonds.
D. High electron gain enthalpy of phosphorus.

Answer

C

Explanation

Presence of one -OH group and two P - H bonds.
Strong reducing behaviour of `H_3PO_2`. All oxy-acid of phosphorus which contain P-H bond act as reductant.
Presence of one -OH group and two P-H bonds.