In which of the following pairs are the two species isostructural?

Options

A. `BrO_3^(-)` and `XeO_3`
B. `SF_4` and `XeF_4`
C. `SO_3^(2-)` and `NO_3^(-)`
D. `BF_3` and `NF_3`

Answer

A

Explanation

`SN` of `Br` in `BrO_3^(-)` is `3+1=4` (trigonal pyramidal), `SN` of `X` in `XeO_3` is `3+1=4` (trigonal pyramidal), `SN` of `S` in `SF_4` is `4+1=5` (seesaw), `SN` of `Xe` in `XeF_4` is `4+2=6` (square planar), `SN` of `S` in `SO_3^(2-)` is `3+1=4` (trigonal pyramidal), `SN` of `N` in `NO_3^(-)` is `3+0=3` (trigonal planar), `SN` of B in `BF_3` is `3+0=3` (trigonal planar), and `SN` of `N` in `NF_3` is `3+1=4` (trigonal pyramidal). Thus, `BrO_3^(-)` and `XeO_3` in option (1) are isostructural.