MEDIUMMCQ SINGLEJEE Advanced ChemistryInorganic Chemistryp -Block Elements (group 15-18)Previous Year Questions

Which of the following oxoacids of phosphorus has strongest reducing property? (NEET (Odisha)₂₀₁₉)

A.H₄P₂O₇

B.H₃PO₃

C.H₃PO₂✓ Correct

D.H₃PO₄

Explanation

P–H bonds found in phosphorus acids have reducing properties. Thus, reducing property is directly proportional to number of P–H bonds. The structure of given oxoacids of phosphorus are as follows: H₃PO₂ contains 2P–H bonds which is maximum among the given options. Thus, H₃PO₂ has strongest reducing property. P-BLOCK ELEMENTS (GROUP 15-18) 32

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