Asked by anonyms

Calculate the density of atoms in (001) in lithium. Express answer in atoms/cm.
Answered by Karl
Lithium is a BCC Crystal
a = 3.5092 * 10^-8

Planar Density (001) (top plane) = 1/a^2

= 8.12 * 10^14
Answered by flou
wrong
Answered by anonyms
What is the correct answer flou??
Answered by flou
I try again
Answered by Karl
If lithium is a BCC crystal.

planar density is atoms per area
the 001 plane look like this
o--o
| |
o--o

the sides are equal to lattice constant a
and the atoms in this area = 4(1/4) = 1
Answered by anonyms
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
Answered by Anon
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?
Answered by Anonymous
The question has a mistake in it, look at the forum...
Answered by atzgfasxhg
1.218*10^15

(001) its "Body" plane !!!!
0---0
|.0.|
0---0

4*(1/4)+ 1(1/2)= 1.5
1.5/a^2= 1.218*10^15
Answered by Chica
1.16e15
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