Chemistry 12th Edition

Published by McGraw-Hill Education
ISBN 10: 0078021510
ISBN 13: 978-0-07802-151-0

Chapter 2 - Atoms, Molecules, and Ions - Questions & Problems: 2.86

Answer

Please see the work below.

Work Step by Step

We know that the symbol $23Na$ gives us more information as compared to $11Na$. The first one is mass number along with the symbol tells us about the isotope of Na and the second one is atomic number with symbol which is less informative.
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