Strong reducing behaviour of H3PO2 is due to

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High electron gain enthalpy of phosphorus

High oxidation state of phosphorus

Presence of two -OH groups and one P - H bond

Presence of one - OH group and P - H bonds.

answer is D.

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Detailed Solution

All oxyacids of phosphorus which have P - H bonds act as strong reducing agents. H3PO2 has two P - H bonds hence, it acts as a strong reducing aqent.

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