It is a double column, You can see, it starts with hydrogen and goes to mercury in ascending order of atomic mass.

双纵栏，你们看到，从氢开始,然后到水银，按原子质量的升序排列。

麻省理工公开课 - 固态化学导论课程节选

Diatomic mean it's di atomic, it's made up of two atoms, and homonuclear means that those two are the same atoms.

双原子意味着它是两个原子，它由两个原子组成，同核意味着这两个原子时相同的原子。

麻省理工公开课 - 化学原理课程节选

Now, chlorine I have to do a little bit more heavy lifting here because chlorine starts as a diatomic molecule.

现在，对于氯,我将会做更多的说明,因为氯元素起初存在于双原子分子中。

麻省理工公开课 - 固态化学导论课程节选

So where we had left off with was we'd fully discussed up to the point of considering homonuclear diatomic molecules, so molecules that both have the same nucleus.

我们上次,讲到了我们,已经讨论过同核双原子分子，也就是有相同原子和的分子。

麻省理工公开课 - 化学原理课程节选

And we can do the same thing with, well, we're going to do it with nitrogen in a minute, but this is a case where we have two atoms sharing electrons.

然后同样的，我们也可以很快的对氮气进行类似的处理，但是这是共用电子,的双原子例子。

麻省理工公开课 - 固态化学导论课程节选

So we're going to limit in our discussion in 511-1 for molecular orbital theory to diatomic molecules.

我们在这个课堂上对分子轨道1,理论的讨论仅限于双原子分子。

麻省理工公开课 - 化学原理课程节选

Then we're going to actually use MO theory to describe bonding within these molecules, and we'll start with homonuclear diatomic molecules.

然后我们要利用MO理论,来描述这些分子内的成键，我们要讨论同核双原子分子。

麻省理工公开课 - 化学原理课程节选

Then at the end, we'll look at an example with a heteronuclear diatomic molecules.

在最后，我们会看一个,异核双原子分子的例子。

麻省理工公开课 - 化学原理课程节选

And where we had left off was we were going to start one example of thinking about now where we have a heteronuclear diatomic molecules, so two different atoms in terms of forming the molecule.

我们还剩下一个,异核双原子分子的例子没讲,这里组成分子的原子，是不同的。

麻省理工公开课 - 化学原理课程节选

So, I will point out, in terms of MO theory, because it rigorously does take into account quantum mechanics, it starts to become complicated once we go beyond diatomic molecules.

我要指出的是，对于MO理论，以为它严格的遵守量子力学，所以一旦超过双原子分子,就变得十分复杂了。

麻省理工公开课 - 化学原理课程节选