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The 2D unit cell of an element is shown....

The 2D unit cell of an element is shown. The two layers are placed one over the other and touching each other. Find the effective number of atoms in the unit cell

Text Solution

Verified by Experts

The correct Answer is:
3
Number of atom is 2D unit cells `= (1)/(3) xx 6 + 1 xx 1 = 3`
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Knowledge Check

  • Number of atoms in fcc unit cell is

    A
    1
    B
    2
    C
    3
    D
    4

  • The effective number of lattice points per unit cell

    A
    1
    B
    2
    C
    3
    D
    4

  • If the total number of atoms per unit cell is 2, the unit cell is

    A
    primitive cubic.
    B
    Body centred cubic
    C
    face-centred cubic.
    D
    end face-centred.

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    In fcc arrangement of A and B atoms, where A atoms are at corners of the unit cell, B atoms at the face - centers, one of the atoms are missing from the corner in each unit cell then find the percentage of void space in the unit cell.

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