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How many atoms constitute one unit cell ...

How many atoms constitute one unit cell of a face-centred cubic crystal?

Text Solution

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Total number of atoms per unit cell in fc c crystal =4 atoms.
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How many atoms constitute one unit cell of a face-centered cubic crystal ?

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Knowledge Check

  • What is the number of atoms in a unit cell of face-centred cubic crystal ?

    A
    4
    B
    6
    C
    2
    D
    1

  • In face-centred cubic unit cell :

    A
    face diagonal of the cube is `asqrt(2)` or `4r`
    (a=edge length, r=radius of constituent units)
    B
    effective number of atoms in the unit cell is 4
    C
    8 tetrahedral voids per unit cell
    D
    rank of the unit cell is 3

  • Total number of atoms per unit cell in a face-centred cubic unit cell is

    A
    4
    B
    3
    C
    2
    D
    1

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    Determine the number of formula units of NaCl in the unit cell. NaCl is a face centred cubic crystal. See the diagram of the NaCl unit cell in the text.

    How many atoms can be assigned to its unit cell if an element forms (i)body-centred cubic cell , (ii)a face-centred cubic cell.

    How many atoms can be assigned to its unit cell if an element forms (i) a body centred cubic cell and （ii) face centred cubic cell ?

    How many atoms can be assigned to its unit cell if an element forms (i) a body centred cubic unit cell (ii) face centred cubic unit cell ?

    How may atoms can be assigned to its unit cell if an element forms (i) body-centred cubic cell (ii) a face -cenrtred cubic cell.

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