ABSTRACT
The time has come when systematic studies of the properties of diatomic molecules are bearing fruit. A periodic system of the free diatomic molecules, analogous to the periodic chart of the elements, has already begun to take form 1 , 2 , 3 and to guide the prediction of ground state dissociation potentials, spring constants, equilibrium inter-nuclear separations, orbital configurations, and state symbols. The prediction of other data, such as for low excited states, and/or ions, has also proved feasible by the same processes of interpolation and extrapolation along trends discovered in tabulated data.
