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The atomic mass of carbon-13 is 13. It has six protons. How many neutrons does this isotope have?

User Tnilsson
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The number of neutrons is the mass number-number of protons. In this case, the mass number is 13. You have 6 protons. To find the number of neutrons you can subtract 6 from 1. The answer is 7 neutrons.
User NewVigilante
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It would have 7 neutrons.

User Musicnothing
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