Among the following species, identify the isostuctural pairs
`NF_(3). NO_(3)^(-), BF_(3), H_(3)O, HN_(3)`

Options

A. `[NF_(3), NO^(-)] " and " [BF_(3), H_(3)O^(+)]`
B. `[NF_(3), NH_(3)] " and " [NO_(3)^(-), BF_(3)]`
C. `[NF_(3), H_(3)O^(+)] "and" [NF_(3)^(-), BF_(3)]`
D. `[NF_(3), H_(3)O^(+)] " and" [NH_(3), BF_(3)]`

Answer

c

Explanation

`[NF_(3) " and " H_(3)O^(+)]` are pyramidal while ` [NO_(3)^(-) " BF_(3)]` are planar . Hence answer (C) is correct .