Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall
ISBN 10: 0321809246
ISBN 13: 978-0-32180-924-7

Chapter 2 - Sections 2.1-2.9 - Exercises - Problems by Topic: 54b

Answer

88 protons, 138 neutrons

Work Step by Step

Atomic number of the isotope $^{226}_{88}Ra$ = 88 = $Z$ Mass number of $^{226}_{88}Ra$ = 226 = $A$ So, number of protons = Atomic number = 88 Number of neutrons = $A - Z = 226-88 $ = 138
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