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Calculate the number of atoms per unit c...

Calculate the number of atoms per unit cell of FCC.

Text Solution

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There are 8 lattice points at the corners of the cube and 6 lattice points at the face centres of the cube.
Therefore, number of particles per unit cell `=(8xx(1)/(8))+(6xx(1)/(2))=4`
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Knowledge Check

  • Aluminium metal has face centred cubic (fcc) structure. The number of 'Al' atoms per unit cell of the lattice is

    A
    2
    B
    1
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  • When atoms are placed at the corners of all 12 edges of a cube, the number of atoms present per unit cell is :

    A
    1
    B
    2
    C
    4
    D
    6

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