|CH301H - Principles
of Chemistry I: Honors
Fall 2011, Unique 51040
Lecture Summary, 6 September 2011
Almost all bonds have some covalent character. The
classical model of covalent bonding says that there is a region of
space between two interacting nuclei where a shared electron can lower
the potential energy of the system, resulting in a stable region of
potential energy space. This is called a "bonding" region.
If the electron is outside that region, it not only does not
stabilize the two interacting nuclei, it destabilizes the entire
system. This is called the "antibonding" region. If an
electron is in the bonding region, a stable covalent bond can be
formed. If an electron is in an antibonding region, it will work
against formation of a colvalent bond.