Q. Strong reducing behaviour of $H_3PO_2$ is due to :
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
Explanation
[Solution] Oxyacids of phosphorus with P-H bonds act as reductants; $H_3PO_2$ has one -OH and two P-H bonds. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.