Calculate the radius of copper atom if it crystallise in face centred cubic lattice and has a density of 8.93 g / cm cube.
Solution
Structure given = fcc
For fcc , Z = 4
Density , d = 8.93
Molar mass , M = 63.55
Avogadro number = 6.2×10^23
Use the given formula
In case of fcc arrangement, we have
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