adrianroblesx13 adrianroblesx13

04-01-2015
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An atom that has 13 protons in 15 neutrons is an isotope of the element

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DanielleEvan DanielleEvan

04-01-2015

the element aluminum has 13 protons and 15 neutrons

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nina092599 nina092599

04-01-2015

aluminum has 13 protons and 15 neutrons

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