Question

what is the relationship between edge length 'a'nd atomic radius 'r' in a simple cubic crystal lattice​

Answer 1

Answer:

Explanation:

Remember that a face-centered unit cell has an atom in the middle of each face of the cube. The square represents one face of a face-centered cube:

Applying Pythagoras theorem,

a²+a²=(r+2r+r)²

=>√2a=4r.

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