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Mention the two crystal systems in which...

Mention the two crystal systems in which all edge lengths in their unit cell are the same. 

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Cubic and Rhombohedral [or trigonal]
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Knowledge Check

  • What is the contribution of the atom present at edge centre of the unit cell ?

    A
    1 part
    B
    `1/2 `part
    C
    `1/4 `part
    D
    `1/8`part

  • In a face centred cubic unit cell of close packed atoms, the radius of atom ( r ) is related to the edge length (a) of the unit cell by the expression

    A
    `r = ( a)/( sqrt(2))`
    B
    `r = ( a)/( 2)`
    C
    `r = ( a)/( 2 sqrt(2))`
    D
    `r = ( sqrt(3)a)/(4)`

    • Similar Questions

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    Name any two crystal system.

    Aluminium crystallizes in an fcc structure. Atomic radius of the metal is 125 pm. Calculate the edge length of the unit cell of the metal.

    b) An element crystallizes in a foc lattice. The edge length of the unit cell is 400 pm. Calculate the density of the unit cell. ("molar mass"="60 g mol"^(-1)) ("Avogadro number"=6.02 xx 10^(23))

    An element crystallizes in fcc lattice. If the edge length of the unit cell is 408.6 pm and the density is 10.5 g cm^(-3) . Calculate the atomic mass of the element.

    Aluminium crystallizes in an FCC structare. Atomic radius of the metal is 125pm. Calculate the edge length of unit cell of the metal.

    In a body-centred cubic unit cell of closest packed atoms, the radius of atom in terms of edge length a of the unit cells is

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