The magnetic moment of 5.92 BM corresponds to the presence of five unpaired electrons in the d-orbitals of Mn2+ ion. Thus, the tetrahedral structure of [MnCl4]2−. complex will show 5.92BM value. As a result, the hybridisation involved is sp3 rather than dsp2. 5 unpaired electrons will go into eg and t2g energy level shown as follows