那么我们称它为第三电离能，或者负的束缚能，还是，2，s，轨道的，但现在我们是从正二价硼离子开始的。

So, what we call this is the third ionization energy, or the negative of the binding energy, again of the 2 s orbital, but now it's in boron plus 2 to we're starting with.

youdao

总是负的，好吧，以后的课，我们会讲椭圆轨道。

It's always negative. Okay, later in the course we will cover elliptical orbits.

youdao

如果总能量为正，这也是正的，要是负的。，a, has, to, be, negative。，这都是物理的废话，也只是用于，规则轨道。

If the total energy were positive, then for this to be positive, a That's physical nonsense, of course, so this only holds for bound orbits.

youdao

So, what we call this is the third ionization energy, or the negative of the binding energy, again of the 2 s orbital, but now it's in boron plus 2 to we're starting with.

那么我们称它为第三电离能，或者负的束缚能，还是，2，s，轨道的，但现在我们是从正二价硼离子开始的。

麻省理工公开课 - 化学原理课程节选

And again, this is just the negative, the binding energy, when we're talking about the 2 p orbital.

再说一遍，这就是负的束缚能，当我们考虑，2，p，轨道的时候。

麻省理工公开课 - 化学原理课程节选