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Electron Arrangement
In IB chemistry, electrons are arranged in shells (energy levels), which contain sub shells (s,p,d,f)
The Hydrogen Spectrum provides evidence for this structure
- A continuous spectrum contains all the wavelengths/frequencies/colour/energies of electromagnetic radiation
- Hydrogen in a discharge tube shows a line spectrum, which contains only certain wavelengths/frequencies/colours/energies of electromagnetic radiation
- The electron in hydrogen can be given extra energy by a fast moving electron in the discharge tube, which causes it to be promoted to a higher energy level
- We can then see lines on the line spectrum of hydrogen at higher energy levels where the electron has been promoted
- As we only see lines and not a continuous spectrum, this proves that the electron can only be in one place at one time, and so shells must exist.
End of this topic!
Drafted by Gina (Chemistry)