We said that's the 1 s orbital.

我们说它是1s轨道。

youdao

So, our first orbital that an electron 1 s must be coming from is the 1 s.

所以，我们的第一个肯定有电子，被打出的轨道是。

youdao

All it is sigma 1 s, and then we have two electrons in it, so it's sigma 1 s squared.

所有的都是sigma1s，上面有两个电子，所以是sigma1s的平方。

youdao

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VOA: special.2009.01.16

And I just want to point out here in terms of things that you're responsible for, you should know that the most probable radius for a 1 s hydrogen atom is equal a nought.

在这里,我想要指出的是，你们要知道氢原子１ｓ轨道,最可能距离等于ａ０

麻省理工公开课 - 化学原理课程节选

So we can also name this orbital, and this orbital we're going to call sigma 1 s star.

我们也可以，给这个轨道命名。

麻省理工公开课 - 化学原理课程节选