the edge langth of the unit cells in terms of the radius of sphere constituting fcc ,bcc and simple cubic unit cells are respectively ………. .

Options

A. `2sqrt(2r),(4r)/(sqrt(3)),2r`
B. `(4r)/(sqrt(3)),2sqrt(2r),2r`
C. `2r,2sqrt(2r),(4r)/(sqrt(3))`
D. `2r,(4r)/(sqrt(3)),2sqrt(2r)`

Answer

A

Explanation

Edge length for different types of unti cells can be tabulated as