Unformatted text preview: Molecular Orbital (MO) Theory 1. When atoms come together, orbitals of like symmetry and similar
energy can mix resulting in bonding and antibonding interactions. 2. M03 are formed from linear (additive and subtractive) combinations of atomic orbitals. a. Additive combinations give lower energy bonding MO’s b. Subtractive combinations give higher energy antibonding MO’s
c. Atomic orbitals that don't interact result in non-bonding M03 3. The total number of atomic orbitals is conserved, i.e., the number of
final MO’s equals the number of initial AO’s 4. MO’s are not localized between two atoms; they are typically
delocalized over several atoms and often the entire molecule. ...
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