College Physics (4th Edition)

Published by McGraw-Hill Education
ISBN 10: 0073512141
ISBN 13: 978-0-07351-214-3

Chapter 29 - Problems - Page 1116: 5

Answer

We can write the symbol for this isotope of potassium: $^{40}_{19}K$

Work Step by Step

The upper number is the total number of nucleons (neutrons and protons), while the bottom number is the number of protons. The element potassium has 19 protons in the nucleus and potassium has the chemical symbol $K$. We can write the symbol for this isotope of potassium: $^{40}_{19}K$
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