Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 2 Atoms, Molecules, and Ions - Study Questions: 98

Answer

$^{39}K$

Work Step by Step

Potassium's atomic weight is 39.098 g/mol, which is closer to 39 than 41; therefore, the $^{39}K$ isotope must be more abundant.
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