Chemistry: The Molecular Science (5th Edition)

Published by Cengage Learning
ISBN 10: 1285199049
ISBN 13: 978-1-28519-904-7

Chapter 18 - Nuclear Chemistry - Questions for Review and Thought - Topical Questions - Page 817a: 12b

Answer

$\beta$ emission

Work Step by Step

Cesium-137 with atomic number=55 is transformed to barium-137 with atomic number=56. That is, the atomic number of the new element is 1 unit greater than the parent nucleus, and there is no change in the mass number. This is the case when a beta particle is emitted.
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