CH301H - Principles of Chemistry I: Honors
Fall 2015, Unique

Lecture Summary, 8 September 2015

Covalent Bonding:  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. We also discussed periodic trends of covalent bonding, such as bond length, bond order, and bond strength.