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Copper crystallises in fcc with a unit length of 361 ~pm . What is the radius of copper atom ?

Options

  1. A157 ~pm
  2. B128 ~pm
  3. C108 ~pm
  4. D181 ~pm

Correct answer

B. 128 ~pm

Step-by-step solution

For FCC, r= 2 a 4 = a 2 2 =0.3535 a given a=361 ~pm aligned r & =0.3535 361 & =128 ~pm aligned

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