Question

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

• A. \([\text{BCl}_3 \text{ and BrCl}_3]\)
• B. \([\text{NH}_3 \text{ and NO}_3^-]\)
• C. \([\text{NF}_3 \text{ and BF}_3]\)
• D. \([\text{BF}_4^- \text{ and NH}_4^+]\)

Hint:

Same number of bond pairs and lone pairs implies same structure.

Answer 1

The Correct Option is D

Step 1: BF\(_4^-\) and NH\(_4^+\) both have tetrahedral geometry.
Step 2: Both involve \(sp^3\) hybridization.