An email with a link to:
was emailed to:
Thanks for sharing About.com with others!
7 Habits of Emotionally Intelligent PeopleHow to Make a Vinegar Trap to Catch Fruit FliesBastille DayWhy Do We Use Euphemisms?Pantheon - Religion of Carthage, by Roy Decker
Discuss in my forum
By Anne Marie Helmenstine, Ph.D.
Mass number is the sum of the number of protons and neutrons in an atom.
Return to the Chemistry Glossary Index
Anne Marie Helmenstine, Ph.D.
©2014 About.com. All rights reserved.