Obtain an expression for total energy of electron in first orbit of doubly ionised lithium atom.how do these values compare with the corresponding value of hydrogen atom Share with your friends Share 0 Shobhit Mittal answered this Dear Student,general expression for the total energy En=-Z2n213.6eVfor Z=3,n=1E=-13.6*9=-122.4 eV.for hydrogen Z=1,n=1E=-13.6 eV.Regards 1 View Full Answer