00:01
So here we're continuing to work on the unit cell.
00:07
And so in the unit cell that is a, what we have is cesium chloride.
00:19
And so each unit cell contains one eighth of each chloride.
00:23
So if you have eight cl minuses multiplied by one over eight, this gives us one whole chloride per unit cell.
00:34
So because cesium is the central atom, the whole iron lies in this unit cell.
00:38
And so the whole unit cell of cesium chloride contains one cesium and one chloride.
00:49
So we have a one to one ratio.
00:52
And next we can look at b.
00:56
So what we have is a face -centred cubic now.
00:59
And so this shows sodium chloride...