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  • 20-10-2016
  • Physics
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what is the mass number of an atom with 5 protons and 7 neutrons

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ampofoeugenia7
ampofoeugenia7 ampofoeugenia7
  • 20-10-2016
mass number is the total number of the nucleons or protons and neutrons so the mass number in this case is 5+7=12
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