Chemistry Question on The solid state

Question

Lithium metal crystallizes in a body centred cubic crystal. If the length of the side of the unit cell of lithium is $351\, pm,$ the atomic radius of the lithium will be

Answer 1

Solution

for bcc type of unit cell $\sqrt{3} a =4 r$ $r =\frac{\sqrt{3}}{4} a$ $=\frac{1.732 \times 351}{4}$ $=151.98$