Question

In an atomic bcc lattice what fraction of edge is not covered by atoms

Answer 1

look in a bcc (3)^1/2 A = 4 R

where A is edge length and R is radius of one atom so...

R =[ (3)^1/2 ]A ÷ 4

and on one edge there are two atoms so length occupied by atoms = { [(3)^1/2]A ÷4 } × 2

i.e.

length occupied = ➰[(3)^1/2] A ÷ 2

and fraction of length occupied is equal to length occupied by total length so it is equal to [(3)^1/2] ÷ 2

now it is fraction occupied to get the fration not occupied by them

just minus the above answer from 1

then what u get is your answer.....