posted by anonyms on .
Calculate the density of atoms in (001) in lithium. Express answer in atoms/cm.
Lithium is a BCC Crystal
a = 3.5092 * 10^-8
Planar Density (001) (top plane) = 1/a^2
= 8.12 * 10^14
What is the correct answer flou??
I try again
If lithium is a BCC crystal.
planar density is atoms per area
the 001 plane look like this
the sides are equal to lattice constant a
and the atoms in this area = 4(1/4) = 1
I tried but its graded wrong 4 times. that's correct it is BCC. atom of this area is ! only but still tere is a mistake
Am i the only one to make the obvious question here? If we knew how we got the answer, we could spot a mistake that might have been overlooked this entire time. How did we get the answer?
The question has a mistake in it, look at the forum...
(001) its "Body" plane !!!!
4*(1/4)+ 1(1/2)= 1.5