General Chemistry: Principles and Modern Applications (10th Edition)

by Petrucci, Ralph H.; Herring, F. Geoffrey; Madura, Jeffry D.; Bissonnette, Carey

Published by Pearson Prentice Hal

ISBN 10: 0132064529

ISBN 13: 978-0-13206-452-1

Chapter 2 - Atoms and the Atomic Theory - Exercises - Atomic Mass Units, Atomic Masses - Page 63: 41

Answer

Some have a mass close to 35.4527 u, but not exactly that mass

Work Step by Step

The statement that is probably true concerning the masses of individual chlorine atoms is that some have a mass of 35.4527 u. This is because chlorine has two stable isotopes, chlorine-35 and chlorine-37, with relative abundances of approximately 75% and 25%, respectively. Chlorine-35 has a mass of 34.9689 u, while chlorine-37 has a mass of 36.9659 u.

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