Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0132525763
ISBN 13: 978-0-13252-576-3

Chapter 4 - Atomic Structure - 4.3 Distinguishing Among Atoms - 4.3 Lesson Check: 30

Answer

Atomic number represents the number of protons in the nucleus of an atom and distinguishes an atom of an element from other elements. Atomic mass is the sum of both protons and neutrons in the nucleus of an atom in an element.

Work Step by Step

Atomic number represents the number of protons in the nucleus of an atom and distinguishes an atom of an element from other elements. Atomic mass is the sum of both protons and neutrons in the nucleus of an atom in an element. They are different because atomic number only accounts for the protons however atomic mass accounts for both protons and neutrons.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.