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The unit cell of metallic gold is face centred cubic.How many atoms occupy the gold unit cell?

$\begin{array}{1 1}\text{4 atoms}\\\text{3 atoms}\\\text{1 atom}\\\text{5 atoms}\end{array} $

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Eight corners at 1/8 atom each=1 atom
Six faces at 1/2 atom each =3 atoms
$\therefore$ 4 atoms occupy the gold unit cell
answered Jul 31, 2014 by sreemathi.v

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