Answer
$^{230}_{90}Th\ -->\ ^{226}_{88}Ra + ^{4}_{2}He$
Work Step by Step
A thorium-230 nucleotide undergoes alpha particle decay losing 2 protons and 2 neutrons to become a radium-226 nucleotide.
Chemistry: A Molecular Approach (3rd Edition)
by Tro, Nivaldo J.
Published by
Prentice Hall
ISBN 10:
0321809246
ISBN 13:
978-0-32180-924-7
Chapter 19 - Sections 19.1-19.12 - Exercises - Problems by Topic - Page 945: 31b
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