What if we capture all of the valence electrons?
如果我们捕获了所有价电子会怎样呢？
We solve this problem by a quantity called the average valence electron energy.
我们通过一个叫做平均价电子能的量来解决这一问题。
Now with this framework, I said that talking about these valence electrons might give us some insight into chemical reactivity.
现在在这个结构下，我说过讨论这些价电子可能会让我们对化学反应有更深的理解。
So we have seven valence electrons.
我们有七个价电子。
How many valence electrons are in chlorine?
氯有几个价电子？
Chlorine has a high valence electron energy.
氯的价电子能很高。
Then it says, count all the valence electrons.
然后它说，考虑所有的价电子。
These have low average valence electron energies.
他们有较低的平均价电子能。
Our next step is thinking about valence electrons.
我们下一步要考虑的是价电子。
So, what if we capture all of the valence electrons.
但是如果我们捕获了所有价电子又怎样呢。
Again, we're just talking about the valence electrons.
同样的，我们只讨论价电子。
And, this outermost shell is termed the valence shell.
这个最外层被称作价电子层。
So this is our valence electron configuration for b 2.
这是B2的价电子构型。
So we're talking about four valence electrons for carbon.
那么碳有四个价电子。
How many electrons do we need to have full valence shells?
要把价层排满需要多少个电子？
And he's stripped off all of the non-valence electrons.
他忽略了所有非价层电子。
And, all he's done is leave the valence electrons associated.
他所做的全部是，考虑到了价电子的关系。
In other words, if the average energy of all the valence electrons.
换句话说，就是所有价电子的平均能量。
So what we should have is 8 valence electrons in our Lewis structure.
所以lewis结构里，有8个价电子。
So we end up having 26 valence electrons that we're dealing with here.
那么我们总共有二十六个价电子,在这种情况下。
So let's think about what this valence electron configuration is for c 2.
让我们来看一下C2的,价电子构型是怎么样的。
But here we're going to add 1, so again, we have 10 valence electrons.
但是这里我们要加上一个，那么跟刚才一样，我们有十个价电子。
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。
And remember, we're only talking about valence electrons, so the outer-most shells.
要记得，我们讨论的只是价电子，也就是最外层的电子。
And, it says, OK, center the element with the lowest average valence electron energy.
它说，好的，把具有最低平均价电子能的元素画在中心。
If you want to understand whether compounds form or not look only at the valence shell.
如果你想理解化合物是否形成，而不仅仅只是看看价层。
So we need to add those 2 valence electrons left as lone pair electrons in our structure.
因此我们需要将这两个剩下的价电子,作为孤对电子加到我们的结构中。
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。
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