Answer
With two valence electrons, the ion is stable.
Work Step by Step
Helium has 2 valence electrons each, minus 2 electrons from the 2+ charge = 2 valence electrons.
Chemistry: A Molecular Approach (3rd Edition)
by Tro, Nivaldo J.
Published by
Prentice Hall
ISBN 10:
0321809246
ISBN 13:
978-0-32180-924-7
Chapter 10 - Sections 10.1-10.8 - Exercises - Problems by Topic - Page 477: 77c
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