Question

The geometry and magnetic behaviour of the complex `[Ni(CO)_4]` are
A. Square planar geometry and diamagnetic
B. Tetrahedral geometry and diamgnetic
C. Square planar geometry and paramagnetic
D. Tetrahedral geometry and paramagnetic

Answer 1

Correct Answer - B
Tetrahedral geometry and diamagnetic
`Ni rarr 3d^(8) 4s^(2)`

So is SFL so unpaired electrons will get paired.

`sp^(3)` hybridisation
Tetrahedral, diamagnetic.