Atomic Variational Calculations: Hydrogen to Boron
Relatively simple quantum mechanical calculations are described for atoms and ions up to boron. The calculations employ scaled orbitals and can be completed with or without the aid of a computer. Given the simplicity of the trial wave functions the agreement with experiment is satisfactory.
Rioux, F. Atomic Variational Calculations: Hydrogen to Boron. The Chemical Educator, 1999, 4(2), 40-43.