Question

In $C_3^{4-}$, the number of $\sigma$ and $\pi$ bonds are:

• A. 2 $\sigma$ and 2 $\pi$ bonds
• B. 3 $\sigma$ and 1 $\pi$ bonds
• C. 2 $\sigma$ and 1 $\pi$ bonds
• D. 2 $\sigma$ and 3 $\pi$ bonds

Answer 1

The correct option is A 2 $\sigma$ and 2 $\pi$ bonds

Single bond contains 1 $\sigma$ bond. Triple bond contains 1 $\sigma$ bond and 2 $\pi$ bonds.
So the carbide ion contains a total of 2 $\sigma$ bonds and 2 $\pi$ bonds.