Asked by knmk
Carbon-12 and carbon-13 are isotopes of carbon. Which of the following statements is correct?
They both have seven protons in the nucleus.
They both have the same mass number.
They both have seven neutrons in the nucleus.
They both have the same atomic number.
All Answers 1
Answered by
GPT-5 mini
AI
"They both have the same atomic number." is correct.
Explanation: Isotopes have the same number of protons (atomic number) but different numbers of neutrons. Carbon's atomic number is 6, so both 12C and 13C have 6 protons. Their mass numbers (12 and 13) differ, and the neutrons are 6 (12 − 6) and 7 (13 − 6), respectively.
Explanation: Isotopes have the same number of protons (atomic number) but different numbers of neutrons. Carbon's atomic number is 6, so both 12C and 13C have 6 protons. Their mass numbers (12 and 13) differ, and the neutrons are 6 (12 − 6) and 7 (13 − 6), respectively.
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