Diatomic Bonding and Antibonding Molecular Orbitals

If A and B are two atoms with overlapping atomic orbitals a and b, whose overlap integral = labdv is greater than zero, we may construct the bonding and antibonding molecular orbitals v = / =a+ and v / = v)/ =A a-b. The 

Chapter 3 Wave-Functions and Valence-Bond Stmctuies for 1-Election Bonds,. .. 

The symmetry for each of these systems requires that k = k =. If A and B are non-equivalent atoms (or more particularly, a and b are non-equivalent atomic orbitals), then in general The parameter k is then either 1 or 1 

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