Solid StateHard

Question

Copper crystallises in a structure of face centerd cubic unit cell. The atomic radius of copper is 1.28 (Ao). What is axial length on an edge of copper.

Options

A.2.16 (Ao)
B.3.62 (Ao)
C.3.94 (Ao)
D.4.15 (Ao)

Solution

4r = a√2
a = (Ao) = 3.62 (Ao)

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