Chemistry: The Molecular Science (5th Edition)

Published by Cengage Learning
ISBN 10: 1285199049
ISBN 13: 978-1-28519-904-7

Chapter 5 - Electron Configurations and the Periodic Table - Questions for Review and Thought - Applying Concepts - Page 240f: 129b

Answer

$CaF_2$

Work Step by Step

Using the trend for atomic radius, we see that Calcium Fluoride is much smaller than Barium Fluoride. Since electrostatic attraction is inversely related to the square of the distance, the larger molecule will experience a lesser atomic attraction. Thus, Calcium Fluoride will have a greater lattice energy.
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