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The pair in which phosphorous atoms have...

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

A

Pyrophosphorous and pyrophosphoric acids.

B

Orthophosphorous and pyrophosphorous acids.

C

Pyrophosphorous and hypophosphoric acids.

D

Orthophosphorous and hypophosphoric acids.

Text Solution

Verified by Experts

The correct Answer is:
B
Orthophosphorous acid `to H_(3)PO_(3)` OS value=3
Orthophosphoric acid `to H_(3)PO_(4)` OS value= +5
Pyrophosphorous acid `to H_(4)P_(2)O_(5)` OS value = +3
Pyrophosphoric acid `to H_(4)P_(2)O_(7)` OS value = + 5
Hypophosphoric acid `to H_(4)P_(2)O_(6)`, OS value = +4
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