Which statement is not true of molecular orbitals?
A) The number of molecular orbitals formed is always equal to the number of atomic orbitals combined.
B) A molecular orbital can accommodate up to two electrons.
C) When electrons are added to orbitals of the same energy, the most stable arrangement is predicted by Hund's rule.
D) Low-energy molecular orbitals fill before high-energy molecular orbitals fill.
E) Antibonding molecular orbitals are higher in energy than all of the bonding molecular orbitals.

Question

Quizplus · Accepted Answer

Antibonding molecular orbitals are indeed higher in energy than their corresponding bonding molecular orbitals, but not necessarily higher than all bonding molecular orbitals. For example, in a molecule with multiple types of bonds, an antibonding orbital related to a weaker bond might be lower in energy than a bonding orbital related to a stronger bond.

Which Statement Is Not True of Molecular Orbitals