In this case, 6 valence electrons for each oxygen, so we have 18 total valence electrons.

在这种情况下，每个氧原子都有六个价电子，因此我们总共有十八个价电子。

麻省理工公开课 - 化学原理课程节选

So, we can put our sulfur in the middle, and then it doesn't really matter how we draw the rest of it, where we put our c l's versus where we put our oxygen.

那么，我们可以把硫放在中间，然后把其它的原子画在哪里就不重要了，把两个氯原子与一个氧原子放在哪里都行。

麻省理工公开课 - 化学原理课程节选

An example of that might be, oh, let's look at something like oxygen.

一个例子可以是，嗯，对，我们看下氧原子。

麻省理工公开课 - 固态化学导论课程节选

We could also, I think, well, maybe this isn't written out in terms of that convention, which sometimes it's not, so let's also try writing it, such that we have the hydrogen and the oxygen atom there.

我们也可以，我想，好吧，还有可能它不是按照惯例写的，有时候会出现这样的情况，因此，让我们把氢原子和,氧原子成键的情况也写出来。

麻省理工公开课 - 化学原理课程节选

It's easy to write the skeletal structure, because it's all oxygen, we don't have to worry about what's going to go in the middle.

画它的骨架结构很容易，因为它们都是氧原子，我们不需要担心哪个原子在中间的问题。

麻省理工公开课 - 化学原理课程节选

It goes after oxygen because it is small.

它在氧原子之后，因为它很小。

麻省理工公开课 - 固态化学导论课程节选

If we go to the oxygen atom, now we're talking about starting with 6 in terms of valence electrons again, but instead of 2, you can see we have 6 lone pair electrons around the oxygen minus 1/2 of 2, so we have minus 1 is our formal charge.

如果我们分析氧原子的话，现在我们讨论的还是,从六个价电子开始，但孤对电子不再是两个了，你会看到氧周围,有六个孤对电子，再减去二的一半，因此我们有一个负的形式电荷。

麻省理工公开课 - 化学原理课程节选

So, let's just arbitrarily put it between these two in this case here, but actually there's no reason we couldn't also put it between oxygen b and c, so I'm going to draw another structure where we have it here.

那么，让我们任意地将它们放在这两个之间，但实际上我们没有理由,不能把它们放在氧原子，B，与，C，之间，因此我将把另外一个结构画在这里。

麻省理工公开课 - 化学原理课程节选