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The pair in which phosphorus atoms have...

The pair in which phosphorus atoms have a formal oxidation state of +3 is

A

orthophosphorus and pyrophosphorus acid

B

pyrophosphorus and hypophosphoric acid

C

orthophosphorus and hypophosphoric acid

D

pyrophosphorus and pyrophosphoric acid

Text Solution

Verified by Experts

The correct Answer is:
A
Orthophosophrous acid : `overset(+1+3-2)(H_(3)PO_(3))`

Let the oxidation number of P in pyrophosphorus acid be x.
So, 4(+1)+2x+5(-2)=0
or ,2x=6 or, x=+3
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