Isostructural species are those which have the same shape and hybridisation. Among the given identify the isostructural pairs.

Options

A. `[NF_(3) and BF_(3)]`
B. `[BF_(4)^(-)and NH_(4)^(+)]`
C. `[BCl_(3)and BrCl_(3)]`
D. `[NH_(3)and NO_(3)^(-)]`

Answer

B

Explanation

`BF_(4)^(-)and NH_(4)^(+)` are isostructural species. The central atom in both is `sp^(3)` hybridised.
`BF_(4)^(-):H=^(1//2)[3+4-0+1]=4(sp^(3))`
`NH_(4)^(+):H=^(1//2)[5+4-1+0]=4(sp^(3))`