The hybridization states of the central atom in the complexes `[Fe(CN)_(6)]^(3-),[Fe(CN)_(6)]^(4-)` and `[Co(NO_(2))_(6)]^(3-)` are:

Options

A. `d^(2)sp^(3),sp^(3)d^(2) and dsp^(2)` respectively
B. `d^(2)sp^(3),sp^(3)d^(2) and sp^(3) d^(2)` respectively
C. `d^(2)sp^(3),sp^(3)d^(2) and d^(2)sp^(3)` respectively
D. all `d^(2)sp^(3)`

Answer

D