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21-11-2016
Chemistry

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What determines the mass number of an element?

the number of protons minus the number of electrons

the number of protons

the total number of protons, electrons, and neutrons

the total number of neutrons and protons

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Аноним Аноним

21-11-2016

Hi , the answer is the total number of neutrons and protons.

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21-11-2016

The mass number of an element is determined by the total number of neutrons and protons.

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