Question

Use the figure below to answer the question that follows.
For which of the molecules in the figure does the central atom, or atoms, have $s{p}^2$ hybridization?

• A. III only
• B. IV only
• C. III and IV only
• D. II and IV only

Answer 1

The correct option is A III only

$N$ in $N{O}_2^{-}$ is having $s{p}^2$ hybridization.

As hybridization =

$\frac{1}{2}$[number of valence electrons in central atom - number of monovalent atom attached - cationic charge + anionic charge]

= $\frac{1}{2}[5+1]=3=s{p}^2$