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Homework Help: Crystallography question

  1. Sep 26, 2010 #1
    Consider x ray diffraction from a crystal with an fcc(face centered cubic) lattice.
    The lattice plane for which there is NO diffraction peak is -

    1. (2,1,2)
    2. (1,1,1)
    3. (2,0,0)
    4. (3,1,1)

    I think Bragg's law must be used. nλ=2d sinλθ.
  2. jcsd
  3. Sep 29, 2010 #2
    can anyone tell me how to calculate hkl values and hence a,b,c values using xrd powder pattern
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