Which of the following statement is correct for the complex `K_(4)[Fe(CN)_(5)O_(2)]` ? [Fe having `t_(2g)^(6)e_(g^(0))` configuration ]

Options

A. `d^(2)sp^(3)` and diamagnetism
B. `sp^(3)d^(2)` and diamagnetism
C. `d^(2)sp^(3)` and paramagnetism
D. `sp^(3)d^(2)` and paramagnetism

Answer

C

Explanation

`K_(4)[overset(2+)Fe(CN)_(5)(overset(-1)O_(2))]^(4-)`
`d^(6) to d^(2)sp^(3)` and paramagnetic due to `O_(2)^(-)`.