The compound having a tetrahedral geometry is .

Options

A. `[Ni(CN_(4))]^(2-)`
B. `[Pd(CN)_(4)]^(2-)`
C. `[PdCI_(4)]^(2-)`
D. `[NiCI_(4)]^(2-)`

Answer

Double salt

Explanation

`[Ni(CI)_(4)]^(2-),Ni(Z =28) implies 3d^(8) 4s^(2),Ni^(+2) =3d^(8)`
`CI^(Θ)` weak field ligands, thus no pairing`sp^(3)`-hybridisation,tetrahedral shape the paramagnetic
(b) `Hg[Co(SCN)_(4)], Co(Z=27) implies3d^(7) 4s^(2),Co^(2+) =3d`
Unpaired electrons `n=3`
Magnetic moment `=sqrt(n(n+2)) =sqrt(3(3+2))=sqrt15 BM`
.