1. Lewis Structures

2. Localized Electron Bonding Model (LE)
Assumption: a molecule is composed of atoms that are bound together by sharing pairs of electrons using the atomic orbitals of the bound atoms.

3. Localized Electron Bonding Model (LE) Parts
Description of the valence electron arrangement using Lewis structures
Prediction of the geometry using the valence shell electron-pair repulsion (VSEPR) model
Description of the type of atomic orbitals used by the atoms to share electrons or hold lone pairs

4. Lewis Structures
What is the most important requirement for the formation of stable compounds?
Answer: The elements achieve noble gas electron configurations
This requirement applies to both ionic compounds and covalent molecules!

5. Review Lewis Structures
Write Lewis dot diagrams for the following: K Br
K+1
Br-1 F
Fluoride ion
(Draw ionic/covalent diagrams to show lone/bonding pairs.)

6. Steps for Writing Lewis Structures
Found on p.376!!!
Examine examples on pp
Expand: What is the configuration for HCN?