Answer
356 pm
Work Step by Step
In the case of the fcc arrangement,
Face diagonal= $4\times(radius)=\sqrt {2}\times(edge)$
$\implies edge=\frac{4\times(radius)}{\sqrt 2}=\frac{4\times 126\,pm}{\sqrt 2}$
$=356\,pm$
Chemistry: The Molecular Science (5th Edition)
by Moore, John W.; Stanitski, Conrad L.
Published by
Cengage Learning
ISBN 10:
1285199049
ISBN 13:
978-1-28519-904-7
Chapter 9 - Liquids, Solids, and Materials - Problem Solving Practice 9.7 - Page 399: a
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