Mind map
Electron Shells
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Electron Shells
Rules
- Lowest energy levels (first shells) filled first
- 8 electrons per shell (only 2 in first)
Period, Group and Atomic number
- Number of electrons in the outer shell = group number
- Period = number of shells containing electrons
- Atomic number = adding up all electrons
Electron configuration
- Nitrogen - 7 protons = 7 electrons
- Argon - 18 protons = 18 electrons
Information
- Description
- GCSE Chemistry Mind Map on Electron Shells, created by katiealexwardlaw on 30/06/2013.
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- katiealexwardlaw
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