Chemistry: The Central Science (13th Edition)

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

Chapter 21 - Nuclear Chemistry - Exercises - Page 947: 21.9b


The number of protons in this isotope is 81, and it has 112 neutrons.

Work Step by Step

The number of neutrons is found by simply subtracting the atomic number from the mass number. (Top - bottom)
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