Isotopes are Atoms of the Same Element That Differ in Their

Question

Isotopes are atoms of the same element that differ in their:
A) number of electrons.
B) number of neutrons.
C) number of protons.
D) ionic charge.

Accepted Answer

Isotopes are atoms of the same element that have different numbers of neutrons, which can result in different atomic masses. They still have the same number of protons and electrons, which determines the element they belong to. Isotopes of the same element will have the same number of protons, but different numbers of neutrons. Therefore, option B is the best choice.