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  • Strong reducing behaviour of H_{3}PO_{2} is due to (i) The low oxidation state of phosphorus (ii) Presence of two -OH groups and one P-H bond (iii) Presence of one -OH group and two P-H bonds (iv) High electron gain enthalpy of phosphorus

Strong reducing behaviour of H_{3}PO_{2} is due to

(i) The low oxidation state of phosphorus

(ii) Presence of two -OH groups and one P-H bond

(iii) Presence of one -OH group and two P-H bonds

(iv) High electron gain enthalpy of phosphorus

Answers (1)

The answer is the option (iii). In the monobasic acid H_{3}PO_{2}, there are two P-H bonds that impart reducing character to the acid.

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