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

Which of the following oxyacid does not contain P–O– P bond? (AIIMS 2018)

A.Isohypophosphoric acid (b) Pyrophosphorus acid

C.Diphosphoric acid

D.Hypophosphoric acid✓ Correct

Explanation

Hypophosphoric acid (H4P2O6) does not contain P–O–P bond whereas, isohypophosphoric acid (H4P2O6), diphosphorus acid (H4P2O5) and diphosphoric acid (H4P2O7) all contain P–O–P bonds. The structures of the following oxyacids of phosphorus is shown below:

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