If `a` is the length of unit cell, then which one is correct relationship ?

Options

A. For simple cubic lattice, Radius of metal atom `=(a)/(2)`
B. For `b.c.c.` lattice, Radius of metal atom`=(sqrt(3)a)/(4)`
C. For `f.c.c.` lattice, Radius of metal atom `=(a)/(2sqrt(2))`
D. All of these

Answer

d

Explanation

These are the formula for radius of metal atom in desired lattice.