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MHT CET202014 Oct 2020Evening ShiftChemistrySolid StateActual

Aluminium crystallises in a face centred cubic structure, it's atomic radius is 125 pm . What is the edge length of unit cell?

Options

  1. A280 pm
  2. B353.5 pm
  3. C335.5 pm
  4. D288.6 pm

Correct answer

B. 353.5 pm

Step-by-step solution

For fcc unit cell, r= a 2 2 a=r(2 2 )=125(2 2 )=353.5 pm

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