The Energy Levels of the Nitrogen Molecule

Article metrics


IN a paper before the American Physical Society (Phys. Rev., 23, 294, Feb. 1924) and in a letter to NATURE (Nov. 1, 1924, vol. 114, p. 642), I gave a set of electronic energy levels for the neutral nitrogen molecule, based on an analysis of its band spectra. These levels were designated X, A, B, C, and D, where X denotes the stable state of the molecule. The interval X to A was suggested as 65,000v (= 8.0 volts), the band system corresponding to this transition being as yet unknown. Dr. Sponer (Zeitsch. f. Phys., 34, 622, 1925), by measuring the excitation potentials of various groups of nitrogen bands, has now obtained results in exact agreement with this diagram. The X to A interval comes out as 7.9 volts.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.

Author information

Rights and permissions

Reprints and Permissions

About this article

Further reading


By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.