Chemistry: The Central Science (13th Edition)

by Brown, Theodore E.; LeMay, H. Eugene; Bursten, Bruce E.; Murphy, Catherine; Woodward, Patrick; Stoltzfus, Matthew E.

Published by Prentice Hall

ISBN 10: 0321910419

ISBN 13: 978-0-32191-041-7

Chapter 21 - Nuclear Chemistry - Exercises - Page 947: 21.9c

Answer

This isotope has 18 protons and 20 neutrons.

Work Step by Step

The mass number is given, and the atomic number must be found on the periodic table. The number of neutrons is found by simply subtracting the atomic number from the mass number.

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