Q5 / 125 · BITSAT 2014 · Chemistry
Which one of the following pairs is isostructural (i.e., having the same shape and hybridization)?
- 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 $\left.\mathrm{BF}_{3}\right]$
- Correct answerD$\left[\mathrm{BF}_{4}^{-}\right.$ and $\left.\mathrm{NH}_{4}^{+}\right]$
Solution
$\mathrm{BF}_{4}^{-}$ hybridisation $\mathrm{sp}^{3}$, tetrahedral structure.
$\mathrm{NH}_{4}^{+}$ hybridisation $s p^{3},$ tetrahedral structure.
Hence, the correct answer is option: 'D'.