Chemistry: A Molecular Approach (3rd Edition)

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

Chapter 11 - Sections 11.1-11.13 - Exercises - Cumulative Problems: 132

Answer

Potassium chloride has the higher melting point because its coordination number is higher than that of copper iodide

Work Step by Step

In potassium chloride, one anion forms bonds with 6 anions, and vice versa. But in copper iodide, one anion bonds with only 4 cations. So, since the coordination number in potassium chloride is higher, it has a higher melting point than copper iodide
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