Oscillator Frequency and Vibrational Quanta in the Hydrogen Molecule

Theoretical values of the oscillator frequency and vibrational quanta in the electronic ground state of ${\mathrm{H}}_2$ are obtained and compared with the corresponding experimental data. Agreement between the two sets of values is found to be of the order of 1 part in ${10}^3$. This is somewhat larger than the estimate (2 parts in ${10}^4$) of the experimental error.