What are isotopes?
A) Atoms with the same number of neutrons but different numbers of protons.
B) Atoms with the same number of protons but different numbers of neutrons.
C) Atoms with the same number of protons but different numbers of electrons.
D) Atoms with the same number of electrons but different numbers of protons.
E) Atoms with the same number of neutrons but different numbers of electrons.

Question

Quizplus · Accepted Answer

Isotopes are defined as atoms of the same element that have different numbers of neutrons in their nuclei. They have the same number of protons (the atomic number) but different atomic masses due to the varying number of neutrons.

What Are Isotopes