Which of the following are inner orbital complex (i.e., involving `d^(2)sp^(3)` hybridisation) and is paramangetic in nature?

Options

A. `[Mn(CN)_(6)]^(3-),[Fe(CN)_(6)]^(3-),[Co(C_(2)O_(4))_(3)]^(3-)`
B. `[MnCl_(6)]^(3-),[FeF_(6)]^(3-),[CoF_(6)]^(3-)`
C. `[Mn(CN)_(6)]^(3-),[Fe(CN)_(6)]^(3-)`
D. `[MnCl_(6)]^(3-),[Fe(CN)_(6)]^(3-),[Co(C_(2)O_(4))_(3)]^(3-)`

Answer

C

Explanation

`[Mn(CN)_(6)]^(3-) and [Fe(CN)_(6)]^(3-)` are inner orbital complexes and paramagnetic while `[Co(C_(2)O_(4))_(3)]^(3-)` is diamagnetic in nature.