Which one of the following pairs is isostructural (i.e., having the same shape and hybridization)?

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Which one of the following pairs is isostructural (i.e., having the same shape and hybridization)?

ChemistryChemical Bonding and Molecular StructureBITSATBITSAT 2014

Options:

A $\left[\mathrm{BCl}_{3}\right.$ and $\left.\mathrm{BrCl}_{3}^{-}\right]$
B $\left[\mathrm{NH}_{3}\right.$ and $\left.\mathrm{NO}_{3}^{-}\right]$
C $\left[\mathrm{NF}_{3}\right.$ and $\left.\mathrm{BF}_{3}\right]$
D $\left[\mathrm{BF}_{4}^{-}\right.$ and $\left.\mathrm{NH}_{4}^{+}\right]$

Solution:

2767 Upvotes Verified Answer

The correct answer is: $\left[\mathrm{BF}_{4}^{-}\right.$ and $\left.\mathrm{NH}_{4}^{+}\right]$

$\mathrm{BF}_{4}^{-}$ hybridisation $\mathrm{sp}^{3}$, tetrahedral structure.

$\mathrm{NH}_{4}^{+}$ hybridisation $s p^{3},$ tetrahedral structure.

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