Question

What is the relationship between radius and edge length of a body centred

Answer 1

hye mate .
Atoms on body diagonal are in contact with each other

i. e.
Length of body diagonal = r + 2r + r = 4r
Also, body diagonal = 
 4r = √3 a

Or

In the BCC lattice, atoms are at the corners and an extra atom is at the centre ( the point of intersection of the body diagonals).If l is the edge length, then a body diagonal is l√3, and the atom at the centre of the cube is at a distance of l√3/2 from the atoms at the corners.The nearest atoms touch each other, so 2*r =l√3/2. => r = l√3/4.

plz mark brainliest