Which of the following complexes are not correctly matched with the hybridisation of their central metal ion ?
(a) `[Ni(CO)_4]` , `sp^(3)` (b) `[Ni(CN)_4]^(2-)` , `sp^(3)`
(c ) `[CoF_6]^(3-)` , `d^(2)sp^(3)` (d) `[Fe(CN)_6]^(3-)` , `sp^(3)d^(2)`
Select the correct option :

Options

A. (i) and (ii)
B. (i)and (iii)
C. (i) ,(iii) and (iv)
D. (ii), (iii) and (iv)

Answer

D

Explanation

`[Ni(CN)_4]^(2-)` is `dsp^(2)` hybridised and not `sp^(3)` .
`[CoF_6]^(3-)` is `sp^(3)d^(2)` hybridised and not `d^(2)sp^(3)`
`[Fe(CN)_6]^(3-)` is `d^(2)sp^(3)` hybridised and not `sp^(3)d^(2)`