Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 21 - Nuclear Chemistry - Exercises - Page 947: 21.21c

Answer

Nickel - 65 is the radioisotope. It has 37 neutrons compared to its 28 protons. This puts it well outside the band of stability.

Work Step by Step

Nickel - 58 is stable because it has a neutron to proton ratio (30 to 28) that falls inside the band of stability.
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