  The study of the magnetic properties of atoms and nuclei was performed. A
linear dependence between the strength of the magnetic field at the nucleus and
the effective charge divided by the major quantum number were analyzed and
explained. The results are discussed within the framework of relativistic
Hartree-Fock calculations. By knowing the mean charge state of an ion and the
mean value of the spin of the electron cloud, the most probable electron
configuration can be extracted.
