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Question

The volume of atoms (radius r) present in fcc unit cell of metal is:


  1. 203πr3

  2. 243πr3

  3. 123πr3

  4. 163πr3


Solution

The correct option is D

163πr3


Volume of atom in a cell =43πr3×n (n=4 for fcc)

=43×πr3×4=163πr3

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