ABSTRACT
In the previous chapters, the electronic structure of atoms has been developed
by first considering the orbitals, energy levels, and states of the hydrogen atom.
Subsequently, these concepts were generalized and extended to deduce similar
descriptions of the properties of multielectron atoms. Because electrons occupy-
ing completely filled shells of a given principal quantum number are localized
around their respective nuclei, it was possible to discuss a variety of core electron
spectroscopies in terms of atomic orbitals and the states derived from these.
