Chemistry: An Introduction to General, Organic, and Biological Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0321908449
ISBN 13: 978-0-32190-844-5

Chapter 4 - Section 4.4 - Atomic Number and Mass Number - Study Check 4.6 - Page 109: a

Answer

For that atom, there are 79 protons in its nucleus.

Work Step by Step

An atom has neutral charge, therefore, we can assume that the number of protons is equal to the number of electrons. Since the number of electrons is equal to 79, the number of protons in its nucleus is also equal to 79.
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