00:03
Okay, so four quantum numbers.
00:06
I like to think of these as an electron's address and where it lives.
00:12
So first quantum numbers, n.
00:14
This is the size of the orbital.
00:19
Okay? we can have, it doesn't matter the shape, you can have really big orbitals or really small orbitals of, of course, varying shapes.
00:28
So i think to think this is the country.
00:30
Okay.
00:30
So l is the shape of the orbital.
00:34
So there are three shapes.
00:39
So the s orbital is a sphere.
00:43
So the s orbital is a sphere.
00:47
Imagine kind of 3d -like.
00:50
The p orbital is what we call a dumbbell shape.
00:54
So it looks something like this with a node right here where the nucleus would be.
00:58
So this node, there will be no electron density there.
01:02
D orbital is going to be what we call a double dumbbell.
01:12
So these three are the main three shapes.
01:15
There are g and f.
01:18
They're very hard to draw, and they're really only present in really, really big atoms, like the radioactive ones using nuclear fusion and fission.
01:31
So i'm going to focus on these for now.
01:33
So the m sub -l is the sub -unit...