Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall
ISBN 10: 0321809246
ISBN 13: 978-0-32180-924-7

Chapter 8 - Sections 8.1-8.9 - Exercises - Problems by Topic: 51b

Answer

One valance electrons

Work Step by Step

Cesium is a main group element. Therefore, its valance electrons are those in the outermost energy principal level. The noble gas configuration for Cesium is $[Xe]6s^{1}$. Therefore, Cesium has one valance electron.
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