Question

what is the definition of isotopes? atoms with different numbers of protons and neutrons. atoms with the same number of electrons and neutrons. atoms with the same number of protons but different numbers of neutrons. atoms with different numbers of protons and electrons.

Explanation:

Isotopes are atoms of the same element. They have the same number of protons (which defines the element) but different numbers of neutrons, resulting in different atomic masses.

Answer:

C. Atoms with the same number of protons but different numbers of neutrons.