devarshi-dt-logo

Question:

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

pyrophosphorous and hypophosphoric acids

orthophosphorous and pyrophosphorous acids

orthophosphorous and hypophosphoric acids

pyrophosphorous and pyrophosphoric acids

Solution:

Orthophosphorous and pyrophosphorous acids have a formal oxidation state of +3 for phosphorous atoms. Hence, the correct option is B.