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What is the formula to find the number of electrons that fit in a energy shell?
2n²
What is the atom neutrality rule
Atoms must be neutral and stable. If another electron is added at any time, there must be a inverse proton added in order to keep the atom stable and fully neutral.
How many elements exist?
118
How many electrons can the first 3 energy shells hold?
1st shell: 2
2nd shell: 8
3rd shell: 18