The Induced Deexcitation Model

An interesting application of Walsh s rehybridization rule, which is probably familiar to most chemists, is shown below  

The angle decrease is ascribed to the increase of ligand electronegativity, which, allegedly, causes an increased utilization of the oxygen 2p AO s for bonding. The data shown below can also be rationalized in a similar fashion. 

We now reexamine these concepts using MOVB theory. 

Clearly, this very analysis, based on the stated assumptions, leads to the same predictions as Walsh s rehybridization rule. 

As a result, the bond dissociation energy of H2 depends critically on two important quantities, namely, I - A and g. These ideas can be generalized to any two electron-two orbital bond connecting identical or different atoms and they lead to the following statement The bond dissociation energy of A-Z is a function of and former is a measure of the tendency of the 

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