The pair in which phosphours atoms have a formed oxidation state of `+3` is

Options

A. orthophosphorus and pyrophosphorus acids
B. pyrophosphorus and hypophosphoric acids
C. orthophosphorus and hypophosphoric acids
D. pyrophosphorus and pyrophosphoric acids

Answer

A

Explanation

`{:("Name","Formula","Oxidation state of P"),("Orthophosphorus acid",H_(3)PO_(3)," "+3),("Pyrophosphorus acid",H_(4)P_(2)O_(5)," "+3),("Hypophosphoric acid",H_(4)P_(2)O_(6)," "+4),("Pyrophosphoric acid", H_(4)P_(2)O_(7)," "+5):}`
Therefore, (a) is the correct option.