if we're actually thinking about electron configuration and we look at lithium, sodium and potassium, these all have one valence electron.

让我们来想一想,锂，钠，钾的电子排布，它们都只有一个价电子。

麻省理工公开课 - 化学原理课程节选

So it looks like most of you got that the electron configuration that we're writing here is for copper.

看来大多数人,都看出了,这是铜原子的电子排布。

麻省理工公开课 - 化学原理课程节选

What we've done is taken this pitch and played it all the way down an octave below it so we're actually getting back to this configuration of the pitch right next to it, and we could--then of course we could go down one more step and we would get the octave, which is a duplication of two-to-one.

我们所做的是固定一个音高，向下一路弹奏一个八度,所以事实上我们又回到了与这个固定音高相邻的音上，我们当然也可以向下再弹一组，然后得到这个八度，这其实就是两个八度对一个八度的重复。

耶鲁公开课 - 聆听音乐课程节选

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 this is the same periodic table that you're going to get in your exams, so it's good to practice doing your problem-sets with that periodic table so you're not relying on having the double check right there of seeing what the electron configuration is.

这也是你们考试时会用到的相同的表,这样你们就不会，所以使用周期表来做问题集,是很好的练习,这样你们就,不会依赖于再次确认,电子构型是什么了。

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

I don't care how you do it on exams or on problem sets, but you do need to be aware that the 3 d once filled is lower in energy than the 4 s, and the reason you need to be aware of that is if you're asked for the electron configuration now of the titanium ion.

我不关心你们在考试或者,问题集中如何做它，但是你们的确需要知道3d一旦被填充,它的能量是小于4s的，你们需要知道这个的原因,是如果你现在被要求,写出钛离子的电子构型。

麻省理工公开课 - 化学原理课程节选