Energy levels of the lithium atom
European Journal of Physics
A Saleh-Jahromi, William Moebs
Starting with the common variational calculation of the ground-state energy of the helium atom, we calculate the ground-state energy of the lithium atom and then use this result in our determination of the energy levels of the valence electron of lithium. The connected set of calculations is suitable for the typical beginning or intermediate course in quantum mechanics.