Ncert Exercises & Solutions

Q. 27 Magnetic moment of ${[M n C l_{4}]}^{2 -}$ 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 ${[M n C l_{4}]}^{2 -}$ complex will show 5.92 BM magnetic moment value.