Question

The number and type of bonds between two C- atoms in $Sr{C}_2$ are

• A. $1\sigma ,1\pi$
• B. $1\sigma ,2\pi$
• C. $1\sigma ,1.5\pi$
• D. $2\sigma$ only

Answer 1

The correct option is B $1\sigma ,2\pi$

$Sr{C}_2$ is an ionic compound $\left(S{r}^{2+}{C}^{2-}\right)$ which produces actylene upon treatment with water. So the structure of $C^{2-}$ is $[C^{-}\equiv C^{-}]$ . It has $1\sigma ,2\pi$ bonds.