How do isotopes differ from each other?
A) by their number of protons
B) by their number of neutrons
C) by their number of ions
D) by their number of atoms

Question

How do isotopes differ from each other? 
A) by their number of protons 
B) by their number of neutrons 
C) by their number of ions 
D) by their number of atoms

Quizplus · Accepted Answer

Isotopes of an element have the same number of protons (which determines the atomic number), but they differ in the number of neutrons in their nuclei, resulting in different atomic masses.

How Do Isotopes Differ from Each Other