1.

Which acid is not formed by the action of water on phosphorus pentoxide ?A. `HPO_(3)`B. `H_(4)P_(2)O_(7)`C. `H_(3)PO_(4)`D. `H_(3)PO_(3)`

Answer» Correct Answer - D

Ans. H3PO3

Reason: Oxidation state should remain same .

All compounds except H3PO3 have +5 O.S .



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