ABSTRACT

The ionization energies of the atoms are computed using the experimentally determined spectroscopic wave numbers invoking Bohr model and Rydberg formula. Because the basic input is the experimentally determined wave number, it is expected and found that all the factors that control the motion and energy of the electrons of the atoms‐the electron correlation, orbital relaxation, and relativistic effects‐are automatically subsumed in the experimental spectral data to make the computed ionization energy values corrected of such discrepancies prevalent in the Hartree‐Fock self-consistent field (SCF) methods. Computed ionization energies have very good correlation with the experimental counter parts. In addition to the express periodicity of groups and periods, the inertness of Hg, the extreme reactivity of Cs atom, and the half‐filled stability o f N $ of\,N $ https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780203711392/9929d6e1-053b-4f9b-8672-defba18a7f0a/content/um13a.tif"/> atom are also reproduced in the evaluated ionization energy data.