- 5.1 Valence Electrons
- 5.2 Valency
- 5.3 Radicals and Their Valencies
- 5.4 Chemical Formula of Compounds
- 5.5 Molecular Formula and Structural Formula
- 5.6 Octet and Duet Rules
- 5.7 Inert Gases and Their Stability
- 5.8 Chemical Bonds and the Causes of their Formation
- 5.9 Cations and Anions
- 5.10 Ionic Bond or Electrovalent Bond
- 5.11 Covalent Bonds
- 5.12 Characteristics of Ionic and Covalent Bonds
- 5.13 Metallic Bonds
