question_answer

Strong reducing behaviour of\[{{H}_{3}}P{{O}_{2}}\]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

Correct Answer: C

Solution :

 Strong reducing behaviour of \[{{H}_{3}}P{{O}_{2}}\] All oxy-acid of phosphorus which contain P-H bond act as reductant. Presence of one -OH group and two P-H bonds.