The spin only magnetic moment of Tetrachloridomaganate (II) ion is `5.9BM`. On the basis of VBT, predict the type of hybridisation and geometry of the compound.

Explanation

`[MnCl_(4)]^(2-)`
Electronic configuration of `Mn` atom
Electronic configuration of `Mn^(2+)` ion
Hybridisation and formation of `[MnCl_(4)]^(2-)` complex
`Cl^(-)` is weak field ligand no electrons pairing occurs.
`sp^(3)` hybridisation
It has `5` unpaired electrons. Hence paramagnetic
Magentic moment,
`mu_(s)=sqrt(n(n+2))BM`
`n=5`
`mu_(s)=sqrt(5(5+2))=sqrt(5(7))`
`=sqrt((35))=5.9BM`
It has tetrahedral geometry.