Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 2 - Atoms, Molecules, and Ions - Additional Exercises - Page 78: 2.92c

Answer

Eu has 63 protons and 89 neutrons

Work Step by Step

The mass number less the number of protons equals the number of neutrons.
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