What is an isotope?
A)An atom that has more or fewer neutrons than it should
B)An atom that has more or fewer electrons than it should
C)An atom that has double the protons of a stable atom
D)A nucleus of an atom that has split during the decay process

Question

Quizplus · Accepted Answer

Isotopes are atoms of the same element that have different numbers of neutrons. This means they still have the same number of protons (thus, the same atomic number) but varying atomic masses.

What Is an Isotope