So here's the pneumonic I mentioned for writing the electron configuration and getting those orbital energies in the right order.

这里是我提到的,对于写电子构型,和以正确的顺序得到轨道能量。

麻省理工公开课 - 化学原理课程节选

So we can write out what the electron configuration is here, and I think that I have already written that out for you in your notes.

我们可以在这里写出电子构型，我觉得我已经在你们,讲义上写出来了。

麻省理工公开课 - 化学原理课程节选

So, that's actually the electron configuration we have when we're talking about copper and some other exceptions in the periodic table that you're going to be looking at.

因此，这才是铜原子真正的电子排布,而且我们在元素周期表中,会看到与铜原子类似的,其他例外的情况。

麻省理工公开课 - 化学原理课程节选

And the reason that we use it is that it is incredibly accurate, and allows us to very, very quickly predict and to predict accurately, in most cases, what the electron configuration of molecules are going to be.

我们用它是因为它极为精确，并且能让我们非常非常快地预测,而且是准确地预测，大多数情况下，分子应该具有的电子排布。

麻省理工公开课 - 化学原理课程节选

But, of course, what you saw in recitation, and hopefully, what you can now think very quickly by looking at this, is that this is not the only configuration of pi bonds that we could have in benzene.

当然，你们在习题课看到过，你们通过看这个可以很快的想到，这不是苯环里,唯一的π键构型。

麻省理工公开课 - 化学原理课程节选

And again, I've written for you, but you can figure out what the electron configuration is just by writing up in this order here.

同样，我已经写出来了，但你们可以把这个写出来,就知道电子轨道构型是什么。

麻省理工公开课 - 化学原理课程节选

If we look at this configuration, what we say is all of the electrons in these inner shells are what we call core electrons.

如果我们看到这个构型，我们所说的是,所有的内层,都是核电子。

麻省理工公开课 - 化学原理课程节选

- The answer to that is definitely no -- if they had the same electron configuration, they would, in fact be neon. But we can think about different ions that have this electron configuration.

答案是绝对没有-,如果它们具有相同的电子排布，那么它们，实际上,将都是氖，但是我们可以想一想,有没有其它离子具有这种电子排布呢？

麻省理工公开课 - 化学原理课程节选

So basically, at the time he was just going on size and then traits, but what we actually know today is that we can also order things in the periodic table by electron configuration.

基本上，在当时他只能通过大小,和特性来进行，但是现在我们已经知道了,我们还可以通过电子排布来对它们进行排序。

麻省理工公开课 - 化学原理课程节选

So, in this one we're selecting the correct electronic configuration for an ion.

那么，这次我们要做的是,选出一个离子正确的电子排布。

麻省理工公开课 - 化学原理课程节选

So here we're talking about v plus 1, so if we were to write it just for the neutral electron itself, we would find that the electron configuration is argon, that's the filled shell in front of it.

这里我们要分析的是正一价的钒离子，因此，我们先写出中性原子的电子排布，可以发现，其原子实是氩原子的电子排布，这些壳层已经被占满了。

麻省理工公开课 - 化学原理课程节选

In the first case, so here is the electron configuration of neon.

首先，这是氖原子的电子排布。

麻省理工公开课 - 化学原理课程节选

We don't always want to go and solve the Schrodinger equation, and in fact, once we start talking about molecules, I can imagine none of you, as much as you love math or physics, want to be trying to solve this Schrodinger equation in that case either. So, what Lewis structures allow us to do is over 90% of the time be correct in terms of figuring out what the electron configuration is.

我们并不想每次都去解薛定谔方程，而且实际上，一旦我们开始讨论分子，我可以想象,你们中没有一个人，不管你有多么热爱数学或物理，会想去解这种情况下的薛定谔方程,总之，路易斯结构能让我们,有超过，90%，的概率判断出正确的,电子排布。

麻省理工公开课 - 化学原理课程节选

So that means that we don't have to worry about things like wave functions when we're talking about Lewis structures, but because they're so simple to use and because they so often predict the electron configuration of molecules accurately, we end up using them all the time in chemistry, so it's very valuable to know how to draw them correctly and to know how to work with them.

因此这也就意味着我们在讨论路易斯结构的时候,不需要担心波函数之类的东西，但是由于路易斯结构不仅简单易用,而且用它来预测分子的电子排布,经常可以得到非常精确的结果，结果我们在化学中一直都在用它，因此知道如何正确地画出并运用,路易斯结构是非常有价值的。

麻省理工公开课 - 化学原理课程节选