sp² Hybridization of Central Atoms

Question:
In which one of the following pairs the central atoms exhibit sp² hybridization?

Correct Answer: BF₃ and NO₂⁻

Explanation

BF₃:
Boron forms three σ bonds and has no lone pair. Electron geometry is trigonal planar → sp² hybridization.

NO₂⁻ (Nitrite ion):
Nitrogen forms two σ bonds and has one lone pair. Total electron domains = 3 → sp² hybridization.

NH₂⁻: sp³ hybridized

H₂O: sp³ hybridized

Hence, the correct pair with sp² hybridization is BF₃ and NO₂⁻.

Related JEE Main Chemical Bonding Questions