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 - Review Questions: 37

Answer

Electron affinity is the energy change associated with the gaining of an electron by an atom in its gaseous state. Among the Group 1A metals, electron affinity becomes more positive as we move down the column. Electron affinity generally becomes more negative as we move to the right across a period in the periodic table.

Work Step by Step

Otherwise, most groups of the periodic table do not exhibit any definite trend in electron affinity.
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