Well, the reason, the way that we can check it is just to see if it's in between our two extreme 1 cases. We know that it has to be more than 1, because even if we had total shielding, 1 we would at least feel is the effective of 1.

好的我们可以检查它的原因和方式是观察,它是否在我们的两种极端案例之间,我们知道它必须大于，因为即使如果我们有完全的屏蔽，我们最小感到的有效值是。

麻省理工公开课 - 化学原理课程节选

So again, when we check these, what we want to see is that our z effective falls in between the two extreme cases that we could envision for shielding.

所以当我们再一次检查这些时，我们想看到的是,有效电荷量处于两种极端案例中,这两种极端案例。

麻省理工公开课 - 化学原理课程节选

And if we do that calculation, what we find out is that the binding energy, in this case where we have no shielding, 72× is negative 8 . 7 2 times 10 to So, let's compare what we've just seen as our two extremes.

我们会发现结合，能在这个情况中，没有屏蔽，等于-8。,所以我们来对比一下,我们在两个极端的案例中看到了什么。

麻省理工公开课 - 化学原理课程节选

The electron completely canceled out 1 it's equivalent of charge from the nucleus, such that we only saw in a z effective of 1.

电子完全抵消了来自原子核的等量电荷,这样我们仅仅看到有效的z为，在极端案例b中。

麻省理工公开课 - 化学原理课程节选

So in extreme case a, 1 we saw that z effective was 1.

在极端案例a中，我们看到有效的z是。

麻省理工公开课 - 化学原理课程节选