C2(i) - Bonding and Reactions 4.
- Created by: Alice Ugg-Boots
- Created on: 01-05-11 14:04
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Electron Shells.
2,8.3 (3rd shell still filling)
ELECTRON SHELL RULES:
1) Electrons always occupy shells (sometimes called energy levels.)
2) The lowest energy levels are always filled first these are the ones close to the nucleus.
3) Only a certain number of electrons are allowed in each shell:
1st shell: 2 2nd shell: 8 3rd shell: 8
4) Atoms are much happier when they have full electron shells like the noble gases in group 0.
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