2.1 Diagram of an atom
2.2 Electrons
2.3 Discovery of Electrons
2.4 Properties of Electrons
2.5 Protons
2.6 Discovery of Protons
2.7 Properties of Protons
2.8 Neutrons
2.9 Discovery of Neutrons
2.10 Properties of Protons
3.1 How are isotopes formed?
3.2 Stable Isotopes
3.3 Unstable Isotopes (Radioactive Isotopes)
3.4 Alpha Radiation or Alpha Decay
3.5 Beta Radiation or Beta Decay
3.6 Radioactive half-life
