00:01
In answering this question, we need to recall that the theoretical density, raw, is equal to n multiplied by the sum of ac plus aa, all of which is then divided by vc multiplied by the value of n .a.
00:20
And this value of n right here, this is equal to the number of corner atoms in a unit cell multiplied by the contribution of each corner atom in a unit cell, multiplied by the contribution of each corner atom in a.
00:30
A unit cell, 8 multiplied by 1 over 8, plus the number of first center atoms in a unit cell multiplied by the contribution of each first center atom in a unit cell, and this is going to be equal to 4.
00:46
Then as for this value of vc, this is equal to a raised to the power of 3, since we are dealing with a cubic unit cell structure.
00:56
Then as for this value of a, a is equal to 4 multiplied by d, sine, theta...