Nodal Theorem, Variational Principle, 2-D wavefunctions to describing VB and MO bonding
نویسنده
چکیده
When two electrons occupy the same bond at the same time, they repel each other, and their motions are not perfectly independent. We consider two approaches: molecular orbital theory, which assumes electrons do not repel each other and move independently, and valence bond theory, which assumes electrons interact so strongly they cannot be on the same nuclei at the same time. The truth lies between the two extremes. VB theory is better at describing dissociation, and MO is better at describing excited states and is useful for atomic spectrum calculations.
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