Question

Strong reducing behaviour of $H_3PO_2$ is due to

• A. low 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 1

Answer: (C)

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