Describe for any two of the following complex ions, the type of hybridisation, shape and magnetic property :
`[NiCl_(4)]^(2-)`

Explanation

`[NiCl_(4)]^(2-)`
Electronic configuration of Ni : [Ar] `4s^(2) 3d^(8)`
Electronic configuration of `Ni^(2+) : [Ar] 4s^(0) 3d^(8)`
`Cl^(-)` is weak field ligand and does not cause pairing of electrons
`[NiCl_(4)]^(2-)`
Electrons donated by the ligands
It shows `sp^(3)` hybridisation and, therefore, has tetrahedral structure. It is paramagnetic due to the presence of unpaired electrons