In which one of the following pairs the central atoms exhibit $\mathrm{sp}^{2}$ hybridization?

(A) $\mathrm{BF}_{3}$ and $\mathrm{NO}_{2}^{-}$

(B) $\mathrm{NH}_{2}^{-}$and $\mathrm{H}_{2} \mathrm{O}$

(C) $\mathrm{H}_{2} \mathrm{O}$ and $\mathrm{NO}_{2}$

(D) $\mathrm{NH}_{2}^{-}$and $\mathrm{BF}_{3}$

JEE Main · 2024 · 09 Apr 2024 · Shift 1 · Chemical Bonding and Molecular Structure

In which one of the following pairs the central atoms exhibit

sp^{2}

hybridization?

Answer: (A)

B F_{3}

(3 bond pairs) and

N O_{2}^{-}

(2 bond pairs + 1 lone pair) are both sp²;

H_{2} O

N H_{2}^{-}

are sp³ and

N O_{2}

is sp². Only option (1) has both sp². Option (1).

JEE Main · 2024 · 09 Apr 2024 · Shift 1 · Single correct option