In the carbon isotope discussion, how many protons/electrons do Carbon-12, Carbon-13, and Carbon-14 share?

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Multiple Choice

In the carbon isotope discussion, how many protons/electrons do Carbon-12, Carbon-13, and Carbon-14 share?

Explanation:
Protons determine the identity of the element, and in a neutral atom the number of electrons equals the number of protons. Isotopes differ only in the number of neutrons, not in protons. Carbon always has 6 protons, so each of Carbon-12, Carbon-13, and Carbon-14 has 6 protons and, if neutral, 6 electrons. The numbers 12, 13, and 14 refer to the total mass (protons plus neutrons), not the count of protons/electrons. Therefore, they all share 6 protons and 6 electrons.

Protons determine the identity of the element, and in a neutral atom the number of electrons equals the number of protons. Isotopes differ only in the number of neutrons, not in protons. Carbon always has 6 protons, so each of Carbon-12, Carbon-13, and Carbon-14 has 6 protons and, if neutral, 6 electrons. The numbers 12, 13, and 14 refer to the total mass (protons plus neutrons), not the count of protons/electrons. Therefore, they all share 6 protons and 6 electrons.

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