18-12-2016
Chemistry

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how is the mass number calculated for an element

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SuhaaZaidi SuhaaZaidi

18-12-2016

Find the number of protons and neutrons of that element and add them together. You might need periodic table. Hope it helps.

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Аноним Аноним

18-12-2016

Mass number=Atomic number+ number of neutrons. Hope it helps

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