carbon - 12 and carbon - 13 are isotopes of carbon. which of the following statements is correct? they both…

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.

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.

Answer

Brief Explanation:

Isotopes of an element have the same number of protons (which determines the atomic number), but different numbers of neutrons and thus different mass - numbers. Carbon - 12 and carbon - 13 are carbon isotopes, so they have the same atomic number (6, since carbon has 6 protons).

Answer:

They both have the same atomic number.