形式电荷

那么，FC，我想大家都知道这是形式电荷。

So , f c , I think you all know is formal charge .

因此我们看到氮的形式电荷是零。

So what we see is that the formal charge on the nitrogen is0 .

另外，我们可以检验一下形式电荷是否正确，就像我刚才说的。

Also , formal charges can be checked , as I just said .

分子结构中的形式电荷及其应用

Formal Charges in Molecular Structure and their Application

实际上我们还没学如何计算形式电荷，我们很快就会学到了。

We haven 't actually learned how to calculate the formal charge yet , we 'll learn it soon .

希望我们下一次做关于形式电荷的问题的时候，大家能够做得快一点。

So hopefully next time we do a formal charge question , we 'll get everyone back up to speed .

那么请大家来告诉我亚硫酰氯中，的硫原子应该有多少形式电荷？

So why don 't you tell me what the formal charge should be on the sulfur atom of thionyl chloride ?

这应该很快就能做出来的原因是，我们已经做完了关于形式电荷的所有计算。

And the reason that this should be so fast is we already did all the calculations for the formal charges .

而它确实是这样，因此我们知道我们很有可能，算对了我们的形式电荷。

And it does , so we know that we 're probably on target in terms of calculating our formal charge .

那么我们现在做完了，实际上应该还有一步，那就是确定形式电荷。

So now we 're done , actually there is one more step , which is to determine the formal charge .

那么现在我们已经做了足够多的画路易斯结构的练习，让我们来讨论一下如何得出形式电荷。

So now that we have enough practice drawing Lewis structures let 's talk about actually figuring out this formal charge .

那么，让我们来算一下已经，用过的一些例子的形式电荷，那么对于氰离子。

So , let 's just figure this out for some of the examples we did , so for the cyanide anion .

而我们流程中的第八步，同样是，形式电荷，我们很快就会讨论它。

And our eighth step in the process , again , is formal charge , which we will talk about very soon .

因此我们会专门讲一讲，如何来画路易斯结构，然后再讨论形式电荷与共振论，它们也属于路易斯结构的范畴。

So we 'll talk specifically about drawing Lewis structures and then about formal charge and resonance , which are within Lewis structures .

实际上是第三个，但它是第二个，形式电荷的例子，也就是亚硫酰氯。

Actually our third , but the second one we 're going to talk about in terms of formal charge , which is thionyl chloride .

但我想让大家告诉我，从形式电荷的角度考虑，你会预测哪一个路易斯结构是最稳定的？

But I want you to tell me in terms of thinking about formal charge , which Lewis structure would you predict to be the most stable ?

那么，在这种情况下，我们看到氮的形式电荷是负的，而在这种情况下，氧的是负的。

So , in this case , we see that our formal charge is negative on the nitrogen , in this case it 's negative on oxygen .

我们之前做过的例题，都是非常简单直接的，因此我们还不需要，用形式电荷来做这种决定。

The examples we 've done so far have been pretty straightforward , so we haven 't needed to use formal charge to make this kind of decision .

我们会在课程的后半部分讲到氧化数，但它和形式电荷完全不是同一个概念。

We 'll get to oxidation number in the second half of this course , but it 's not in any way the same idea as formal charge .

那么，这些就是在我们需要在，不同的路易斯结构之间做选择的时候，我们如何用形式电荷来进行判断的各种方法。

So , these are the different ways that we can actually go ahead and use formal charge when we 're choosing between different types of Lewis structures .

说到形式电荷，基本上形式电荷就是，单个原子在形成分子之后，是得到了电子还是失去了电子的一种量度。

So when we talk about formal charge , basically formal charge is the measure of the extent to which an individual atom within your molecule has either gained or lost an electron .

我们还可以把形式电荷算出来，显然这两个原子的形式电荷，应该是完全相同的，我们要处理的只有氧这一种原子。

We could also figure out the formal charges , and obviously the formal charges between these two atoms , they 're going to be identical , we 're only dealing with oxygen atoms here .

而为了检验任何一个结构是否有效，看它们是不是好的路易斯结构，我们要做的最后一件事就是检查形式电荷。

And the last thing we do for any of our structures to check them and figure out are these valid or not valid , are these good Lewis structures is to check the formal charge .

而如果我们要考虑它们中的哪个更好，结果从形式电荷来看，它们之间没有区别，因此这不能帮我们进行判断。

And if we were to think about which one of these is better , it turns out that it 's the same I in terms of formal charges , so that doesn 't help us out .

那么如果我们按照流程，经过所有的步骤来画路易斯结构，我们会得到这样的路易斯结构，然后我们可以算出所有的形式电荷。

So if we went through and drew out our Lewis structure following each of our steps , what we would get is this as our Lewis structure here , and we could figure out all of the formal charges .

因此同样地，我们可以检验一下，我们所有的形式电荷是否正确，确保它们加起来等于零，而它们确实是这样，这是合理的，因为亚硫酰氯是一个中性原子。

So again , we should be able to check all of our formal charges and make sure they add up to0 , which they do , and that makes sense , because we have a neutral atom in terms of thionyl chloride .

论文详细分析了电荷灵敏放大器的电路模型，给出了适用于硅半导体探测器的电荷灵敏放大器的设计原则，研制出不同电路结构形式的电荷灵敏放大器并做了性能测试，比较了它们的优劣。

The paper analyzes the model of the charge-sensitive preamplifier and introduces the charge-sensitive preamplifier designing method .

在试验室条件下，评定织物以摩擦形式带电荷后的静电特性。

In laboratory conditions , the fabric to be in the form of friction with the electrostatic charge of .

本文讨论一种新型气体放电形式，即电荷复合放电。

A new type of gas discharge , called electric charge neutralizing discharge , is discussed in this paper .

提出了麦克斯韦方程组的一种新的构建形式，突出了电荷守恒定律。

The new forms of Maxwell 's equations substitute the old forms , it empthasizes the conservation of electric charge .