The crystal structure chromium is BCC. -Derive the atomic packing factor -Are there any close packed

The crystal structure chromium is BCC.

-Derive the atomic packing factor -Are there any close packed planes

-Calculate the linear densities in the [1,1,1] and [1,0,1] directions

-Calculate the planar densities of the (0,0,1) and(0,1,1) planes

-What is the minimum plane spacing between (1,1,1) planes

-Calculate the density of chromium from the atomic packing factor

Atomic mass Cr= 51.9961 amu

Na= 6.023 x10^23 atoms/mole

Atomic radius of Cr= 0.1249 nm