1. Bonding

2. So Far Ionic Bonds Covalent Bonds: Van der Waals bonding
sp3 orbitals
Point Charge Model
Actually can have a polar/ionic character
Van der Waals bonding
Synchronized instantaneous dipoles in molecular solids (e.g. inert gases such as Ne and Ar)
Others: polar molecules and polymers
Metallic Bonds: more detail later
Mixed Bonds and Macroscopic Properties

3. Electronegativity and Mixed Bonds
Diamond, polymers
Graphite
H-bonded polymers
Liquid Crystals
Ionic Glasses
Doped Semiconductors
Complex Salts
Alloys
Ionic Ceramics
Alkali Metals 1

4. Macroscopic Properties
Melting Temperature
Elastic Moduli – see Kasap Example
Thermal Expansion