Question

In which of the following molecules / ions BF₃, $NO_2^-$, $NH_2^-$ and H₂O, the central atom is sp² hybridized ?
(a) $NH_2^-$ and H₂O
(b) $NO_2^-$ and H₂O
(c) BF₃ and $NO_2^-$
(d) $NO_2^-$ and $NH_2^-$

Answer 1

the brain answer to this question is

B