Answer
Please see the work below.
Work Step by Step
We know that atomic number is the number of protons in an atom and it is denoted by Z. On the other hand, mass number is the sum of protons and neutrons in an atom and it is denoted by A.
Chemistry 12th Edition
by Chang, Raymond; Goldsby, Kenneth
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: 2.12
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