Chemistry: The Molecular Nature of Matter and Change 7th Edition

Published by McGraw-Hill Education
ISBN 10: 007351117X
ISBN 13: 978-0-07351-117-7

Chapter 2 - Problems - Page 83: 2.36


Atomic number - it is the number of protons in the nucleus of an atom, which is characteristic of a chemical element. Mass number - it is the total number of protons and neutrons in a nucleus. Mass number can vary without changing the identity of element.

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