Which distortion results when overlapping atomic wave functions are non-orthogonal?

💡 Explanation

Increased splitting occurs because, due to non-orthogonality, the Linear Combination of Atomic Orbitals (LCAO) method introduces artificial interaction; therefore energy levels diverge to compensate rather than remaining degenerate under perturbation, creating a repulsive force.

• Which outcome results when the molecular orbitals of butadiene misalign?
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