1. Lon-Capa 6th HW assignment due Friday, 11/4, 5 pm.
5th Quiz due Sunday, 11/13 by 10 pm. It will open Friday, 11/11 at 5 pm.

3. Successive IEs

4. Sizes of Ions

5. The Structure of Lithium Fluoride (ionic solid)

6. Percent Ionic Character

7. A Covalent Bond

8. Bond Types

9. Bond Types

10. A Polar Bond

11. Electronegativity

14. Localized Electron Model
A molecule is composed of atoms bonded together to share valence electron pairs
The shared electron pairs are localized between nuclei of paired atoms.
Pairs of electrons are shared to lower the overall energy of the molecule compared to atoms in the free state.

15. Lewis Structures
Determine the total number of valence electrons in the molecule.
Form at least one bond between atoms in the molecule (a pair of electrons is a bond)
Arrange the rest of the electrons (in pairs) to satisfy the octet rule or duet rule (for hydrogen).
Watch for exceptions.