Answer
A
Work Step by Step
$Mg^+$ is the only species that doesn't have the electronic configuration of a noble gas, that would be $Mg^{2+}$ and the compound $MgCl_2$.
Chemistry and Chemical Reactivity (9th Edition)
by Kotz, John C.; Treichel, Paul M.; Townsend, John R.; Treichel, David A.
Published by
Cengage Learning
ISBN 10:
1133949649
ISBN 13:
978-1-13394-964-0
Chapter 7 The Structure of Atoms and Periodic Trends - 7-6 Periodic Trends and Chemical Properties - Review & Check for Section 7-6 - Page 279: 1
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