Question

two atoms that are different isotopes of the same element have the same number of protons and the same number of neutrons the same number of protons but a different number of neutrons a different number of protons but the same number of neutrons a different number of protons and a different number of neutrons

Explanation:

Isotopes of an element have the same atomic number (same number of protons) but different mass - numbers (different number of neutrons).

Answer:

the same number of protons but a different number of neutrons