Isotopes

Definition

Isotopes are atoms of the same element with different numbers of neutrons but the same number of protons. They have identical chemical properties but differ in atomic mass.

Related terms

Atomic Mass: The average mass (including all isotopes) for an element listed on the periodic table.

Radioactive Decay:

The process by which unstable isotopes spontaneously break down into more stable forms over time.

Half-Life: The time it takes for half of a sample of radioactive isotopes to decay into more stable forms.