Answer
$_{11}^{21}Na → _{+1}^{0}e + _{10}^{21}Ne$
Work Step by Step
Na-21 undergoes positron emission to form Ne-21.
Chemistry: The Molecular Science (5th Edition)
by Moore, John W.; Stanitski, Conrad L.
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 817b: 22b
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