1. Electromagnetic Radiation

2. E.R.
How energy is transferred. (Light) Dual Nature of light Moves in waves, but acts like a particle.
photons
Wavelength ()
Speed of light (c)
3.00 x 10 8 m/s
Frequency ()= number of cycles per second

3. R O Y G B I V Types of E.R. electromagnetic spectrum
How are frequency and energy related?
How are wavelength and frequency related?
Directly proportional
Inversely proportional

4. Emission of energy
Ground state of an electron: lowest possible energy for an electron Excited state: any state higher than the ground state e-
When an electron returns to ground state it emits energy in the form of light.
Excited states e- E e-
Ground state