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An element having an atomic radius of 0.14 ~nm crystallizes in an f_ c c unit cell. What is the length of a side of the cell ?

Options

  1. A0.56 ~nm
  2. B0.24 ~nm
  3. C0.96 ~nm
  4. D0.4 ~nm

Correct answer

D. 0.4 ~nm

Step-by-step solution

For a fcc unit cell aligned & r= 2 a 4 & a= 4 r 2 =2 2 0.14=0.39 0.4 ~nm . aligned

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