Chemistry 12th Edition

Published by McGraw-Hill Education
ISBN 10: 0078021510
ISBN 13: 978-0-07802-151-0

Chapter 2 - Atoms, Molecules, and Ions - Questions & Problems - Page 68: 2.10

Answer

Please see the work below.

Work Step by Step

We know that atomic number is the number of protons and mass number is the sum of number of protons and neutrons in an atom. ll the atoms of an element must have same atomic number while mass number may vary due to different number of neutrons.
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