Question

Body centered cubic lattice question -
A metallic iron has a body centered lattice. The density of iron is 7.87 g/cm3, what is the edge length of the unit cell of this sample of iron?
Please explain and show work! Thank you!

Answer 1

ρ =nA / VN
n=2 for BCC
A = atomic eight of Fe
Volume of V =( 4/R suare root of 3 )^3
Density = 7.87 g/cm3
N is Avogadro number
find R from the above equation

Answer 2

then the valu eof R u put in this equation to get ur result that is a=?
a = 4/\[\sqrt{3R}\]