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NEETChemistrySolid State

What is the edge length of a unit cell in a face-centered cubic (fcc) structure in terms of the sphere radius (r)?

Options

  1. Aa = r
  2. Ba = 2r
  3. Ca = √2r
  4. Da = 4r

Correct answer

C. a = √2r

Step-by-step solution

The edge length (a) of a unit cell in a face-centered cubic (fcc) structure is equal to the square root of 2 times the radius of the spheres (a = √2r).

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