Attached are the PowerPoints for lessons 68 – 80. You will need the latest version of MS-Office to view pptx files.

Lesson 68 Ion Formation

Lesson 69 Common Ions

Lesson 70 Ionic Bonds

Lesson 71 Binary Ionic Compounds

Lesson 72 Writing Formula Units

Lesson 73 Metallic Bonds

Lesson 74 Covalent Bonds

Lesson 75 Characteristics of Covalent Bonds

Lesson 76 Octet & Duet Rule

Lesson 77 Electron Dot Notation

Lesson 78 Lewis Dot Configurations

Lesson 79 Resonance

Lesson 80 Geometry of Molecules