All right, so that's really all there is to thinking about valence bond theory in terms of the most simple explanation here.

好了，这就是,价电子轨道理论的,最简单的解释。

麻省理工公开课 - 化学原理课程节选

So why don't you tell me what the valence bond description would be of these carbon hydrogen bonds?

你们来告诉我,碳氢键的价,电子是怎样的？

麻省理工公开课 - 化学原理课程节选

OK, then it says draw a single bond from each surrounding atom to the central atom, and subtract two valence electrons.

后将中心原子与其相邻原子之间,连上单键，然后减掉2个价电子。

麻省理工公开课 - 固态化学导论课程节选

And to do this we're going to introduce valence bond theory, and the idea of hybridization of orbitals.

在这之前我们要引入价电子成键理论，和杂化轨道的概念。

麻省理工公开课 - 化学原理课程节选

In valence bond theory, the focus is on discussing the bonds, but it should look very familiar to you, because there's two types of bonds that we want to discuss here.

在价电子成键理论中，所关注的是讨论成键，但这对于你们来说应该很熟悉，因为这是我们要讨论的两种键。

麻省理工公开课 - 化学原理课程节选

So, we can think about now how do we describe this bond in valence bond theory.

我们现在可以考虑,怎么在价电子成键理论中描述这个键。

麻省理工公开课 - 化学原理课程节选

So the idea behind valence bond theory is very easy to understand.

价电子成键理论,非常容易理解。

麻省理工公开课 - 化学原理课程节选

So, using our simple valence bond theory, what we would expect is that we want to pair up any unpaired electrons in methane with unpaired electrons from hydrogen and form bonds.

利用简单的价电子成键理论，我们预计,要把所有甲烷中没有配对的电子,和氢原子中没有配对的电子配对来形成键。

麻省理工公开课 - 化学原理课程节选

So we're going to finish talking about molecular orbital theory, we'll switch over to discussing bonding in larger molecules, even larger than diatomic, so we'll move on to talking about valence bond theory and hybridization.

我们要结束关于分子轨道理论的讨论，转向讨论大分子的成键，比二原子分子更大的分子，我们会继续讨论价电子成键理论,和杂化。

麻省理工公开课 - 化学原理课程节选

So let's think about methane using valence bond theory.

让我们用价电子成键理论来看一看甲烷。

麻省理工公开课 - 化学原理课程节选

So what I want to tell you is we also always get the same bond order if we instead only deal with the valence electrons.

我想要说的是我们如果,只考虑价电子也可以得到相同的键序。

麻省理工公开课 - 化学原理课程节选

So let's just prove that to ourselves and figure out the bond order just using valence electrons.

让我们证明一下这一点,来看看只用价电子算出键序。

麻省理工公开课 - 化学原理课程节选

/2 So this would mean the bond order is equal to 1/2, and in terms of valence electrons, how many bonding valence electrons do we have?

这意味着键序等于，对于价电子，有多少个成键价电子？

麻省理工公开课 - 化学原理课程节选

N 2 So any chemist should be able to just look at n 2 and know that it's a triple bond, but that's not something that we've learned how did to do yet, so let's go ahead and start a new topic that's going to allow us to have some sort of sense of what the valence electron configuration, which includes whether something's a single or double or a triple bond can be figured out for any given molecule.

任何一个化学家都应该能够仅仅通过看到2,就知道它有一个三键,但是我们还没学习如何做到这点，因此下面我们就开始进入一个新的主题,它将使我们能够有一定的认识,对于价电子的排布情况，包括可以对任何一个给定分子中的键是单键双键,还是三键作出判断。

麻省理工公开课 - 化学原理课程节选