Atomic Orbital Hybridization at Surfaces Hydration Energies

2 Atomic Orbital Hybridization at Surfaces Hydration Energies 

The differences in chemisorption between transition metal and transition-metal oxide surfaces, as discussed above, are quite general and are very similar for the other oxides and for sulfides and other ionic solids. The electronic factors that control this behavior can be captured by relating the cations in the oxide to the metal atoms in well-defined coordination complexes. 

This can be generalized to bonding in the oxides and sulfides, when each anion neighbor of a cation is considered to contribute two electrons to cr-type cation-anion covalent bond. 

The electronic structure on the cation is very similar to that in the coordination com- 

V + dangling bond with two electrons. The last situation would be unstable and could initiate a reconstruction with reduction of oxygen coordination. 

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