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

In which one of the following pairs the central atoms exhibit \(\mathrm{sp}^2\) hybridization ?
  1. \(\mathrm{H}_2 \mathrm{O}\) and \(\mathrm{NO}_2\)
  2. \(\mathrm{BF}_3 \text { and } \mathrm{NO}_2^{-}\)
  3. \(\mathrm{NH}_2^{-}\) and \(\mathrm{H}_2 \mathrm{O}\)
  4. \(\mathrm{NH}_2^{-}\) and \(\mathrm{BF}_3\)

Solution

$\begin{aligned} & \mathrm{BF}_3 \rightarrow \mathrm{sp}^2 \\ & \mathrm{NO}_2{ }^{-} \mathrm{sp}^2 \\ & \mathrm{H}_2 \mathrm{O} \rightarrow \mathrm{sp}^3 \\ & \mathrm{NO}_2 \rightarrow \mathrm{sp}^2 \\ & \mathrm{NH}_2{ }^{-} \rightarrow \mathrm{sp}^3\end{aligned}$

Asked in: JEE Main 2024 (09 Apr Shift 1)

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