Complex with maximum number of unpaired electron will exhibit maximum attraction to an applied magnetic field [Zn(H2O)6]2+→d10 system →t2g6 eg 4,0 unpaired e− [Co(H2O)6]2+→d7 system →t2g5 eg 2,3 unpaired e− [Co(en)3]3+→d6 system →t2g6eg0,0 unpaired e− [Ni(H2O)6]2+→d8 system →t2g6 eg 2,2 unpaired e−