Chemistry: The Central Science (13th Edition)

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

Chapter 2 - Atoms, Molecules, and Ions - Exercises: 2.57a

Answer

Charge: +2

Work Step by Step

Atoms of elements want to have the electron configuration of the nearest noble gas (in terms of number of electrons) on the periodic table. The nearest noble gas to Magnesium (Mg) is Neon, and in order to get the electron configuration of Neon, Magnesium must lose two electrons. Hence, the charge of its most stable ion is +2.
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