00:01
Hello, let's have a look at the question.
00:02
So now, in a bcc cell, the atoms touch each other along the body diagonal.
00:24
So now, according to first part, if the radius of atom is r, then the body diagonal will be equals to r plus 2r plus r.
00:45
That is equals to 4 times r.
00:48
Now, from the geometry of a cube, the body diagonal is equals to 3 into edge length.
01:02
So this is equals to 3a.
01:05
This is according to cube.
01:08
So now we can say that 4r is equals to root 3 by 4 and into a.
01:16
Or we can say that the radius of metal atom is equals to root 3 by 4 into a.
01:32
So from here we can get that r is equals to root 3 by 4 and multiplied by a.
01:39
So from here we can say that a is equal to 4 into 2 divided by root 3, a.
01:50
That is 4 .62 angular.
01:54
Now for the b part, the volumetric density of atoms is a to the power 3, that is equals to 98 .53 angular to the whole power 3...