Valence Bond Theory

Valence Bond Theory

In chemistry, valence bond (VB) theory is one of two basic theories, along with molecular orbital (MO) theory, that were developed to use the methods of quantum mechanics to explain chemical bonding. It focuses on how the atomic orbitals of the dissociated atoms combine to give individual chemical bonds when a molecule is formed. In contrast, molecular orbital theory has orbitals that cover the whole molecule.

Read more about Valence Bond Theory:  History, Theory, VB Theory Today, Applications of VB Theory

Other articles related to "valence bond theory, theory, bonds, bond, valence bond":

Valence Bond Theory - Applications of VB Theory
... An important aspect of the VB theory is the condition of maximum overlap which leads to the formation of the strongest possible bonds ... This theory is used to explain the covalent bond formation in many molecules ... For example, in the case of the F2 molecule, the F - F bond is formed by the overlap of pz orbitals of the two F atoms, each containing an unpaired electron ...
Chemical Bond - Comparison of Valence Bond and Molecular Orbital Theory
... In some respects valence bond theory is superior to molecular orbital theory ... When applied to the simplest two-electron molecule, H2, valence bond theory, even at the simplest Heitler-London approach, gives a much closer approximation ... In contrast simple molecular orbital theory predicts that the hydrogen molecule dissociates into a linear superposition of hydrogen atoms and positive and negative hydrogen ...
Modern Valence Bond Theory
... Modern valence bond theory is the application of valence bond theory, with computer programs that are competitive in accuracy and economy with programs for the Hartree-Fock method and other ... The early popularity of valence bond methods thus declined ... It is only recently that the programming of valence bond methods has improved ...
Three-center Four-electron Bond - Description - Valence Bond Theory
... resonant Lewis structures as shown below In this representation, the octet rule is not broken, the bond orders are 1/2, and there is increased electron ...

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