Chemistry 12th Edition

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

Chapter 8 - Periodic Relationships Among the Elements - Questions & Problems: 8.54

Answer

Please see the work below.

Work Step by Step

We know that the valence shell electronic configuration of magnesium is $3s^2$ and that of aluminium is $3s^2, 3p^1$.We also know that the valence shell electronic configuration with half filled sub shell are relatively more stable.
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