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 - Page 376: 65b


$[Ar]4s^{2}$$3d^{10}$$4p^{5}$ $[Ar]4s^{2}$$3d^{10}$$4p^{6}$ or $[Kr]$

Work Step by Step

Write the electron configuration for an uncharged Br atom. One electron must be added to Br to form the ion $Br^{-}$. Add this electrons to its energy level and change the corresponding electron configuration.
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