Answer
See explanation below.
Work Step by Step
A) Group -6 because they're 6 electrons in the outer shell.
1s2 2s2 2p4.
B) Group 3.
1s2 2s2 s2p1
Chemistry: The Molecular Nature of Matter and Change 7th Edition
by Silberberg, Martin; Amateis, Patricia
Published by
McGraw-Hill Education
ISBN 10:
007351117X
ISBN 13:
978-0-07351-117-7
Chapter 9 - Problems - Page 390: 9.14
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