Question

which has a greater atomic number? carbon - 14 or carbon - 12 carbon - 14 cannot be determined. carbon - 12 they have the same atomic number because they both are carbon

Explanation:

Atomic number is defined by the number of protons in an atom's nucleus. All carbon isotopes (like Carbon - 14 and Carbon - 12) have the same number of protons. The numbers 14 and 12 refer to the mass number (sum of protons and neutrons), not the atomic number.

Answer:

They have the same atomic number because they both are Carbon.