#### Answer

D

#### Work Step by Step

Cesium is located in Group 1A and has one valence electron. Therefore, one electron must be removed from cesium in order to obtain an electron configuration of a noble gas. Therefore, (D) is the correct answer.

Published by
Prentice Hall

ISBN 10:
0132525763

ISBN 13:
978-0-13252-576-3

D

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