Editing Molecular orbital (section)

==Formation of molecular orbitals==
Molecular orbitals arise from allowed interactions between [[atomic orbital]]s, which are allowed if the symmetries (determined from [[group theory]]) of the atomic orbitals are compatible with each other. Efficiency of atomic orbital interactions is determined from the [[Orbital overlap|overlap]] (a measure of how well two orbitals constructively interact with one another) between two atomic orbitals, which is significant if the atomic orbitals are close in energy. Finally, the number of molecular orbitals formed must be equal to the number of atomic orbitals in the atoms being combined to form the molecule.