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 - Problems by Topic: 97b

Answer

2 atoms per unit cell

Work Step by Step

As can be seen in the diagram, each of the 8 atoms on the corners of the cell contributes 1/8 of its volume. The central atoms contributes it's whole volume. So, effective number of atoms per unit cell = (1/8 * 8) + 1 = 2
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