How many neutrons are in an atom of carbon-12?

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C Rationale: An atom of carbon-12 contains six neutrons, which contributes to its atomic mass and stability as an isotope of carbon.

The number of neutrons in carbon-12 is specifically defined as six since its atomic number is six, indicating it has six protons. Choices like two and four misrepresent the neutron count, while twenty-four vastly exceeds the expected range for any carbon isotope. Each of these distractors fails to align with the established definition of carbon-12, which is characterized by its precise nucleon composition, making six neutrons the only accurate answer.

Chemistry HESI A2 Exam

How many neutrons are in an atom of carbon-12?

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