ELECTRON SHELL RULES
1. Electrons always occupy shells
2. The lowest energy levels are always filled first the ones closest to the nucleus
3. only a certain number of electrons allowed
1St 2 2nd 8 3rd 8
4. Atoms are much happier when the shells are full like noble gases
5. In most atoms outer shell is not full and this makes it want to react.
Comments
No comments have yet been made