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: 2.15

Answer

Please see the work below.

Work Step by Step

We know that $He_2^3$ has 2 protons and 1 neutron while $He_2^3$ has 2 protons and 2 neutrons. $Mg^{24}_{12}$ has 12 protons and 12 neutrons while $Mg^{25}_{12}$ has 12 protons and 13 neutrons. $Ti^{48}_{22}$ has 22 protons and 26 neutrons . $Br^{79}_{35}$ has 35 protons and 44 neutrons. $Pt^{195}_{78}$ has 78 protons and 117 neutrons.
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