In which one of the following pairs the central atoms exhibit sp 2 hybridization?

Chemistry · Chemical Bonding

JEE Main 2024 — 9 April, Shift 1 — Question 63

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

Option A:
$\mathrm{BF}_{3}$ and $\mathrm{NO}_{2}^{-}$
Correct
Option B:
$\mathrm{NH}_{2}^{-}$ and $\mathrm{H}_{2} \mathrm{O}$
Option C:
$\mathrm{H}_{2} \mathrm{O}$ and $\mathrm{NO}_{2}$
Option D:
$\mathrm{NH}_{2}^{-}$ and $\mathrm{BF}_{3}$

Answer: A

Step-by-step solution

$\mathrm{BF}_{3} \rightarrow \mathrm{sp}^{2}$

$\begin{array}{*{35}{r}}{} & \text{NO}_{2}^{-}\to \text{s}{{\text{p}}^{2}} \\{} & {{\text{H}}_{2}}\text{O}\to \text{s}{{\text{p}}^{3}} \\{}&\text{N}{{\text{O}}_{2}}\to \text{s}{{\text{p}}^{2}} \\{} & \text{NH}_{2}^{-}\to \text{s}{{\text{p}}^{3}} \\\end{array}$

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Exam: JEE Main 2024
Paper: 9 April, Shift 1
Subject: Chemistry
Chapter: Chemical Bonding
Topic: Hybridization and VSEPR

The total number of species from the following in which one unpaired electron is present, is . N 2, O 2, C 2^-, O 2^-, O 2^2-, H 2^+, CN^…

Answer: A

Step-by-step solution

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