Atomic Structure and Radioactivity

📋 Course Outline

1. Atomic particles
2. Particle size ranking
3. Nuclear particles
4. Particle charges
5. Element definition
6. Periodic table
7. Electron shells
8. Electron arrangement
9. Element differences
10. Atomic number
11. Mass number
12. Isotopes

📖 1. Atomic particles

🔑 Key Concepts & Definitions

• Proton: A positively charged particle located in the nucleus of an atom.
• Neutron: A neutral (no charge) particle located in the nucleus of an atom.
• Electron: A negatively charged particle orbiting the nucleus in electron shells.
• Atomic number: The number of protons in an atom's nucleus, defining the element.
• Mass number: The total number of protons and neutrons in an atom's nucleus.
• Isotope: Variants of an element with the same number of protons but different numbers of neutrons.

📝 Essential Points