EXCITED STATES OF THE MOLECULAR IONS OF HYDROGEN FLUORIDE, HYDROGEN IODIDE, WATER, HYDROGEN SULPHIDE, AND AMMONIA

Abstract

The ionization of the molecules of hydrogen fluoride, hydrogen iodide, water, hydrogen sulphide, and ammonia, by essentially monoenergetic electrons, has been studied in a mass spectrometer. The various excited states of the molecular ions of these compounds have been observed and the corresponding energy levels of the ions have been measured. The results are interpreted in terms of the electronic structures of these molecules as given by molecular orbital theory.