C.F.S.E=(−0.4x+0.6y)Δo+zP where x = number of electrons occupying t2g orbital y = number of electrons occupying eg orbital z = number of electrons occupying eg orbital For low spin d6 complex electronic configuration =t2g6eg0 or t2g2,2,2eg0 ∴x=6,y=0,z=3 C.F.S.E=(−0.4×6+0×06)Δo+3P=