P-Block Elements Ques 564
Question: The number of $ P-OH $ bonds and the oxidation state of phosphorus atom in pyrophosphoric acid $ (H_4P_2O_7) $ respectively are:
Options:
A) four and four
B) five and four
C) five and five
D) four and five
Show Answer
Answer:
Correct Answer: D
Solution:
Oxidation State: Each P atom is bound to one oxygen $ =-1 $ $ 2OH=-1\times 2=-2 $ $ 1Oxygen=-2 $ $ Total=-5 $ P=+5.
