Which of the following statement(s) is/are correct ?

Options

A. `Ni(CO)_(4)` is diamagnetic and `sp^(3)` hybridised
B. Complex ion `[Cu(CN)_(4)]^(3-)` is paramagnetic and `Cu^(+)` ion is `dsp^(2)` hybridised
C. `[MnBr_(4)]^(2-)` ion is paramagnetic and `sp^(3)` hybridised
D. Vaska's Catalyst i.e. `[IrCl(CO)(PPh_(3))_(2)]` is diamagnetic and `Ir^(+)` ion is `dsp^(2)` hybridised .

Answer

A, C, D

Explanation

`[overset(+1)Cu(CN)_(4)]^(3-) impliessp^(3)`,tetrahedral, diamagnetic.