If the Zeff of cubes a, b and c is x, y and z respectively, find xyz. (For instance if x = 2, y = 3, z = 5, xyz = 235)
a)
b)
c)
Let's try to get a 3-D understanding of the crystal structure by looking at a different view. You must already have an idea from the videos.
Can you see that the portions depicted here are 18th of a sphere?
Since we have 8 such portions in total, we get
18∗8=1
Similarly for the other 2.
Here we have one full sphere in the middle.
And the remaining is a similar structure to the previous one
So, 1 + 18∗8=2
Here, the spheres portions on the faces will contribute 1/2.
And those at the corners will contribute 1/8 again.
So, 12∗6=3
And 18∗8=1
So total 3 + 1 = 4