1.

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

Answer»

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

Solution :`[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.


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