Answer
This is equal to two times the number of protons in the element plus its number of neutrons.
Work Step by Step
We added the number of protons in the element to its number of neutrons and protons.
Chemistry: An Introduction to General, Organic, and Biological Chemistry (12th Edition)
by Timberlake, Karen C.
Published by
Prentice Hall
ISBN 10:
0321908449
ISBN 13:
978-0-32190-844-5
Chapter 4 - Section 4.4 - Atomic Number and Mass Number - Questions and Problems - Page 111: 4.24d
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