The number of molecular orbitals (MOs) formed is
always equal to the number
of atomic orbitals combined.
1.The
more stable the bonding MO, the less stable the corresponding antibonding MO.
2.The
filling of MOs proceeds from low to high energies.
3.Each
MO can accommodate up to two electrons.
4.Use
Hund’s rule when adding electrons to MOs of the same energy.
5.The
number of electrons in the MOs is equal to the sum of all the electrons on the bonding atoms.