Chemistry: The Molecular Nature of Matter and Change 7th Edition

Published by McGraw-Hill Education
ISBN 10: 007351117X
ISBN 13: 978-0-07351-117-7

Chapter 2 - Problems: 2.38

Answer

See explanation below.

Work Step by Step

Because of the percent abundances and the mass of a proton and neutron are not exactly 1 amu, therefore, no atomic masses are whole numbers.
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