00:01
In this problem, we're looking at molecular orbitals and how they might combine.
00:09
So we're first told to take two 2s orbitals and bring them together.
00:14
So remember, s orbitals are just circles.
00:17
And we're going to have bonding and antibonding.
00:23
So when they come together and they're the same base, we get bonding.
00:27
And so it just becomes something like this, where we have these dots to show the nuclei.
00:34
So this is your bonding molecular orbital.
00:39
Then we have antibonding.
00:41
And now we're going to have opposite phases.
00:45
So when they come together, they instead are going to have this node in between them where there's no electron density.
00:55
And these are different phases.
00:58
And again, this is antibonding.
01:05
Then we want to look at diatomic lithium...