Chemistry: The Molecular Nature of Matter and Change 7th Edition

Published by McGraw-Hill Education
ISBN 10: 007351117X
ISBN 13: 978-0-07351-117-7

Chapter 9 - Problems: 9.51

Answer

See explanation below.

Work Step by Step

The Horizontal trend is that the EN Increases across the period. The Vertical trend is that the En decreases going down a group. The Two most electronegative elements are F and O. The Two least electronegative elements are Fr and Cs.
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