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NEET2009ChemistrySolid StateActual

Copper crystallizes in a face-centred cubic lattice with a unit cell length of 361 pm . What is the radius of copper atom in pm?

Options

  1. A108
  2. B128
  3. C157
  4. D181

Correct answer

B. 128

Step-by-step solution

Cu fcc lattice aligned &4 r= 2 a & r = 1 2 2 a &r= 1 2 2 361=128 aligned

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