Answer
$^{80}_{35}Br$
Work Step by Step
35 is atomic number of Bromine.
Mass = protons + neutrons = 35+45 = 80
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 4.5 - Isotopes and Atomic Mass - Questions and Problems - Page 114: 4.33b
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