Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 29 - Molecules and Solids - Problems - Page 854: 2

Answer

-0.7 eV

Work Step by Step

The answer to Problem 1 is 5.1 eV (to 2 significant figures), without counting the contribution to the binding energy from the electron clouds. The actual binding energy is less, 4.43 eV. The contribution of the electron clouds to the binding energy is 4.43eV – 5.1eV = -0.7 eV. It is negative because the electron repulsion makes the opposite-charge ions easier to separate.
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