Magnetic moment, µ=√n(n+2)BM (where, n=no. of unpaired electrons) As transition metal atom/ion in a complex may have unpaired electrons ranging from zero to 5 . So, maximum number of unpaired electrons that may be present in a complex is 5. ∴ Maximum value of magneticmoment among all the transition metal complexes is √5(5+2)=√35=5.92BM