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Carbon-13 is an isotope. It has 6 protons and _____.
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Carbon-13 is an isotope. It has 6 protons and _____.

User Silverlight Student
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and seven neutrons. i hope this helps

User ESG
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Carbon-13 has an atomic mass of 13.
Atomic mass is the sum of protons and neutrons.
There are 6 protons, so there are 13 - 6 = 7 neutrons.

Answer is 7 neutrons (and 6 electrons)
User Paul Bellora
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