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How many electron shells does a Rubidium atom have?

April 26, 2017Atom electron rubidium shells

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How many electron shells does a Rubidium atom have?

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Rubidium has 5 shells because the first shells has 1 electron, the next 2 shells have 8 electrons, the fourth shells has 18 electrons and the last shells has 2 electrons. the atomic number is 37, 1+8+8+18+2=37. Therefore Rb has 5 shells.