And what I want to point out here is this angular dependence for the p orbitals for the l equals 1 orbital.

这里我要指出的是,ｌ等于１的ｐ轨道随角度的变化。

麻省理工公开课 - 化学原理课程节选

And the other thing to point out is that the energy that an anti-bonding orbital is raised by, is the same amount as a bonding orbital is lowered by.

另外一个要指出的事情是,反键轨道引起的能量升高，和成键轨道引起的能量降低是相同的。

麻省理工公开课 - 化学原理课程节选

So, first, if I point out when l equals 0, when we have an s orbital, what you see is that angular part of the wave function is equal to a constant.

首先，如果ｌ等于０,那就是ｓ轨道，你们可以看到,它波函数的角度部分是一个常数。

麻省理工公开课 - 化学原理课程节选

The reason that I wanted to point out this nodal plane here is because this is why it is called a pi orbital.

我指出这个节面的原因是因为,它就是为什么这个叫做π轨道的原因。

麻省理工公开课 - 化学原理课程节选

And again, I want to point out that a molecular orbital, we can also call that a wave function, they're the same thing.

同样，我要指出的是,一个分子轨道，我们也可以叫它波函数，这是一件事情。

麻省理工公开课 - 化学原理课程节选

And what I want to point out that we just figured out for molecular orbital theory, is that o 2 is a biradical, because remember, the definition of a radical is when we have an unpaired electron.

我要指出的是,我们刚利用分子轨道理论，指导了O2是二价自由基，因为记住，自由基的定义是,有个未配对的电子。

麻省理工公开课 - 化学原理课程节选

Another thing I want to point out about every sigma orbital that you see, and it will make more sense when we contrast it with pi orbitals later.

另外一个我要指出的事情就是,关于每个sigma轨道你能看到,当我们把它和π轨道对比的时候会看的更清楚。

麻省理工公开课 - 化学原理课程节选

z And what you need to remember is if the z 8 is equal to eight or greater, such as oxygen being the cut-off point, this sigma 2 p orbital is actually lower in energy than the pi 2 p orbitals, the molecular orbitals.

你们要记住如果,等于或者大于，就像O是分界点，这时sigma2p轨道,比π2p轨道能量更低。

麻省理工公开课 - 化学原理课程节选