Isotopes are atoms of the same element with the same number of protons and a different number of
a. electrons.
b. molecules.
c. neutrons.
d. ions. reset selection
The correct answer among the choices is option C. A stable isotope is
characterized as an atom where its nuclei has the same number of protons but
different number of neutrons. There are about 300 known stable isotopes
occurring naturally.
