Q. 27 Magnetic moment of ${\left[MnC{l}_{4}\right]}^{2-}$ is 5.92 BM. Explain giving reason present.

The magnetic moment 5.92 BM shows that there are five unpaired electrons present in the

d-orbitals of Mn${}^{2+}$ ion, As a result, the hybridisation involved is sp${}^{3}$ rather than dsp${}^{2}$. Thus

tetrahedral structure of ${\left[MnC{l}_{4}\right]}^{2-}$ complex will show 5.92 BM magnetic moment value.