Question

The total number of $\sigma$ and $\pi$ -bonds in pyrophosphoric acid are respectively

• A. 8,2
• B. 10,2
• C. 12,2
• D. 8,4

Answer 1

Answer: (C)

The structure of pyrophosphoric acid $\left(H_4{P}_2{O}_7\right)$ is as



Hence, it contains $12\sigma$ and $2\pi$ -bonds.