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11-06-2016
Chemistry

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The mass number of an atom is obtained by totaling the number of _ and _. electrons and protonselectrons /neutronsprotons and neutrons/ neutrons and isotopes

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mpanderla95 mpanderla95

11-06-2016

The mass number of an atom is obtained by totalling up the number of protons and neutrons there are for that atom.

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