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Face Centred Cubic A crystal structure found in some of the common elemental metals; within the cubic unit cell atoms are located at all corner and face-centered positions. Roughly 20% of the elements crystallize with face centred cubic structures. 
| Volume of conventional cell | a3 | | Lattice points per cell | 4 | | Volume of primitive cell | 1/4a3 | | Lattice points per unit volume | 4/a3 | | Number of nearest neighbours | 12 | | Nearest neighbour distance | a/21/2 | | Number of second neighbours | 6 | | Second neighbour distance | a | | Packing fraction | 1/6π21/2 |
See also: Body Centred Cubic, Crystal, Hexagonal Close Packed, Simple Cubic, Unit Cell.
  
Subjects:- Chemistry
- Physics
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