21. Bear in mind that, say, the thermal oscillation of a diatomic molecule is quantized. 22. Therefore, a diatomic molecule would be expected to have a molar constant-volume heat capacity of 23. In the simplest case of a diatomic molecule the nuclear coordinates axis refers to the internuclear separation. 24. For a diatomic molecule , the geometry is defined by the length of a single vibrational wave functions. 25. The non-rigid rotor is an acceptably accurate model for diatomic molecules but is still somewhat imperfect. 26. The above definition of bond order is somewhat ad hoc and only easy to apply for diatomic molecules . 27. The diatomic molecule "'tellurium monoxide "'has been found as a transient species. 28. Hartree Fock method calculations on diatomic molecules were performed in 1956 at MIT, using a Boys and coworkers. 29. In both cases the P-and R-branch wavenumbers follow the same trend as in diatomic molecules . 30. When computers were first used to calculate bonding in molecules, it was possible to only calculate diatomic molecules .
