Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0132525763
ISBN 13: 978-0-13252-576-3

Chapter 5 - Electrons in Atoms - 5 Assessment: 57

Answer

Ru

Work Step by Step

Add the superscripts together in order to determine the number of electrons. This in turn will give you the atomic number of the element.
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