Chemistry 12th Edition

Published by McGraw-Hill Education
ISBN 10: 0078021510
ISBN 13: 978-0-07802-151-0

Chapter 2 - Atoms, Molecules, and Ions - Questions & Problems - Page 68: 2.18

Answer

Please see the work below.

Work Step by Step

We know that a. $W^{186}_{74}$ has 74 protons $186-74=112$ protons and 74 electrons. b. We know that $Hg^{201}_{80}$ has 80 protons $201-80=121$ and 80 electrons.
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