1. Ionic Bonding

2. Valence Electrons Located in the highest occupied energy level
Determines the chemical properties of an element
Usually the only electrons used in chemical bonds

3. Electron dot structures
Indicate the valence electrons only
Octet rule

4. Atoms of metallic element tend to lose electrons
Atoms of non-metallic elements tend to gain electrons

5. Cations
Positive electrical charge
Sodium Neutral
Sodium cation

6. Anions
Negative electrical charge
Chlorine anion
Chlorine neutral

7. Ionic compounds Composed of anions and cations.
Ionic bonds – relatively weak
Most ionic compounds are crystalline solids with high melting temperatures