1. Education
You can opt-out at any time. Please refer to our privacy policy for contact information.

Discuss in my forum

Isotopes Definition

Chemistry Glossary Definition of Isotopes

By

Although there are radioactive isotopes, the term refers to nonradioactive atoms, too.

Although there are radioactive isotopes, the term refers to nonradioactive atoms, too.

fStop Images - Jutta Kuss, Getty Images
Isotopes Definition: Isotopes are atoms with the same number of protons, but differing numbers of neutrons. Isotopes are different forms of a single element.

Examples: Carbon 12 and Carbon 14 are both isotopes of carbon, one with 6 neutrons and one with 8 neutrons (both with 6 protons).
Related Video
How to Balance Chemistry Equations
Video: Trends in the Periodic Table

©2014 About.com. All rights reserved.