What is the radius of sodium atom if it crystallizes in bcc structure with the cell edge of 400 pm ?

What is the radius of sodium atom if it crystallizes in bcc structure

1.	What is the radius of sodium atom if it crystallizes in bcc structure with the cell edge of 400 pm ?
Answer» SOLUTION :For BCC, `r=sqrt3/4a=1.732/4xx400` =173.2 PM