What are carbon-12, carbon-13, and carbon-14?

different elements

different isotopes of the same element

carbon atoms with different numbers of electrons

carbon atoms with different numbers of electrons

Explanation:

Carbon-12 has 6 neutrons, carbon-13 has 7 neutrons, and carbon-14 contains 8 neutrons. Carbon-12 and 13 are stable isotopes, which means that the nucleus does not undergo radioactive decay. Carbon-14 possesses an unstable nucleus which undergoes radioactive decay

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