Abstract
The applicability of four potential energy functions for alkali hydride molecules has been examined. The potentials are: (i) Varshni—Shukla III, (ii) Varshni—Shukla IV, (iii) Hellman and (iv) Modified Rittner. Varshni—Shukla III and IV potentials have been treated with three adjustable parameters. The function has been tested in its ability to reproduce the spectroscopic constant ω e χ e , and to give agreement with RKRV curves. It has been found that Varshni—Shukla potentials, when used with three adjustable parameters, not only become applicable to alkali hydrides but turn out to be highly satisfactory in comparison with all the functions studied so far for alkali hydrides.
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