Chemical Bonding

Chapter Objectives
At the end of this unit students will be able to
1.  determine the number of valence elenctrons in an atomo of a representative element.
2.  explain how the octet rule applies to atoms of metallic and nonmetallic elemcnts.
3.  describe how cations and anions form.
4.  explain the electrical charge of an ionic compound.
5.  describe properties of ionic compounds
7.  distinguish between melting points and boiling points of molecular and ionic compounds.
7.  describe how electrons are shared to form covalent bonds and identify exceptions to the octet rule.
8.  demonstrate how electron dot structrues represent shared electrons.
9.  describe how atoms form double or triple covalent bonds.

Key Terms
chemical formula
electron dot structure
formula unit
halide ion
ionic bonds
metallic bonds
octet rule
valence electrons
covalent bond
diatomic molecule
hydrogen bonds
molecular compound
molecular formula
nonpolar covalent bond
polar covalent bond
polar molecule
polyatomic ion
structrural formula
van der Waals force
VSEPR theory