Chemical Bonding and Molecular Structure - Result Question 57
####58. In which of the following molecules / ions
$BF_3, NO_2^{-}, NH_2^{-}$and $H_2 O$,
[2009]
the central atom is $s p^{2}$ hybridized?
(a) $NH_2^{-}$and $H_2 O$
(b) $NO_2^{-}$and $H_2 O$
(c) $BF_3$ and $NO_2^{-}$
(d) $NO_2^{-}$and $NH_2^{-}$
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Solution:
- (c) We find that in the given molecules hybridisation is
$ \begin{aligned} & BF_3 \to s p^{2} \\ & NO_2^{-} \to s p^{2} \\ & NH_2^{-} \to s p^{3} \\ & H_2 O \to s p^{3} \end{aligned} $
