1. EM Spectrum

2. Wave Characteristics of EM Radiation

3. Wave Parameters =wavelength of wave
=frequency of wave – number of oscillations per second
c=speed of wave=speed of light

4. Refraction

5. Photoelectric Effect

6. Atomic Spectrum of Hydrogen

7. Energy Levels of the Hydrogen Atom

8. Bohr’s Atom
Bohr model - electrons orbit the nucleus in stable orbits. Although not a completely accurate model, it can be used to explain absorption and emission.
Electrons move from low energy to higher energy orbits by absorbing energy.
Electrons move from high energy to lower energy orbits by emitting energy.
Lower energy orbits are closer to the nucleus.

9. Comparison of Bohr and QM Model
Electron
Particle
Wave
Electron Orbit
Fixed
Spread Out (Orbitals)
Energy
Quantised

10. Energy Order of Orbitals

11. Use of Periodic Table

12. Change in Atomic Radii

13. Change in Ionisation Energy

14. Change in Electron Affinity