light and electrons
- Created by: Karin Johansson
- Created on: 17-04-14 17:21
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- Light and electrons
- energy levels
- can only absorb and emit definite amounts of energy
- move between their ground and excited states
- absorption spectra
- coloured background
- black lines
- lines correspond to frequency
- electrons absorb photons and get promoted to their excited state, this producing the lines
- radiation absorbed corresponds to deltaE=hv
- Untitled
- emission spectra
- black background
- coloured lines
- electrons absorb a photon and get promoted, electrons then drop back to their ground state, this produces the lines
- radiation emitted corresponds to deltaE=hv
- coloured lines are different because frequency is different for each transition
- shells
- 1st
- 2
- 2nd
- 8
- 3rd
- 18
- 4th
- 32
- 1st
- lyman
- level 1
- UV
- level 1
- balmer
- level 2
- visual
- level 2
- level 3,4,5
- infrared
- ionisation energy
- the difference between ionisation point and the ground state
- X --> X(^+) + e (^-)
- energy levels
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