Isotopes of an element containa. equal numbers of protons and neutrons. b.the same number of protons but a different number of neutrons. c.the same number of neutrons but a different number of protons. d.the same number of protons but a different number of electrons.

Isotopes are the atoms of the same elements that have the same number of protons (same atomic number) , but different number of neutrons.

b.the same number of protons but a different number of neutrons.

the correct answer is option d

explanation:

i was wrong its d because they dont use cm when calculating square roots