Which of the following pairs of species are isostructural ?

Options

A. `CH_(3)^(+),CH_(3)^(-)`
B. `NH_(3),CH_(3)^(-)`
C. `BF_(3),overset(oplus)CH_(3)`
D. `overset(cdot)CH_(3),overset(+)CH_(3).`

Answer

B, C, D

Explanation

(B) `NH_(3)" and "CH_(3)` are isostructural (both are pyramidal)
(C) `BF_(3)" and "overset(+)CH_(3)` are isostructural (both are triangular planar).