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.

youdao

那么这里显示的是氮，我们能看出来是因为它有七个电子。

So, nitrogen is shown here, we know that because it has 7 electrons.

youdao

那么在我们的第一个结构中，我们发现氮的形式电荷量是五减去四4,再减去二，因为我们开始有五个价电子，因此它的形式电荷量是负一。

So in our first structure, we would find for the nitrogen we have a formal charge 5 minus 4 minus 2, because we're starting with 5 valence electrons, so that is a formal charge of minus 1.

youdao

那么有一种情况是，我们把碳放在中间，还有一种情况是，把硫放在中间，另外一种情况是把氮放在中间。

So in one case, we could actually put carbon in the middle, in one place, we could put sulfur in the middle, and in one case we could put nitrogen.

youdao

克雷默计算了一下，如果海地将人类排泄物中的50%养分回收利用到农田，那么每公顷氮的投入将跃升到17千克。

Kramer calculates that if Haiti recycled 50 percent of the nutrients in human waste onto farmland, input would leap to 17 kilograms per hectare.

youdao

如果你在一个水系统中多放氮，那么你就会改变它的形态，并且导致靠水供给的生命数量有所改变。

If you put additional nitrogen into a water system, you change the type and quantity of life that water can support.

youdao

如果人类没有加速氮循环的速度，那么就远不会有众多人对地球上做其他的各种事情。

There would be nowhere near as many people doing all sorts of other things to the planet if humans had not sped the nitrogen cycle up.

youdao

那么碳和氮之间呢？

What about between the carbon and nitrogen?

youdao

那么，请大家来告诉我，并且记住它，你认为氢，碳和氮中哪个原子,应该在氰化氢的中间呢？

So, why don't you go ahead and tell me, keeping that in mind, which atom in terms of h c or n would you expect to be in the center of hydrogen cyanide?

youdao

因此，如果我们讨论的是氮与氮之间的单键，双键与三键，那么三键应该是其中最短的一个，同时也是最强的一个。

So, if we talked about a nitrogen-nitrogen single versus double versus triple bond, the triple bond will be the shortest and it will be the strongest.

youdao

那么我们的第一种小偏差已经解释清楚了，但是我们还有另外一种，它在氮和氧之间发生。

So that explains one of our glitches here, but we have another glitch, and that second glitch comes between nitrogen and oxygen .

youdao

我们知道电离能会随着周期表，向右而逐渐变大，因此碳的电离能比旁边的氮要低一些，那么就像我说的。

We know that ionization energy is going to increase as we go across the periodic table, so that means carbon has a lower ionization energy than nitrogen which is right next to us.

youdao

那么这些氮是从何而来呢？

Where does all this nitrogen come from?

youdao

那么这些氮是从何而来呢？

Where does all this nitrogen come from?

youdao