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- 1How shells are there in an atom and how many electrons are on the first 3 shells?There are 3 many shells
there are 2 electrons on the first shell and on the 2nd and 3rd there are 8 - 2—the top number is atomic mass
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- (Chemistry) Science Fichas sobre Untitled_5, creado por Macaulay-Reiss C el 01/10/2013.
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- Macaulay-Reiss C
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