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.

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。

麻省理工公开课 - 化学原理课程节选

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

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。

麻省理工公开课 - 化学原理课程节选

The way, in the simplest terms that cyanide can kill you, is it basically out-competes your oxygen for the heme in your blood.

氰化物可以杀掉你的最简单的一种方式基本上就是，将氧从你血液中,的血红素中挤出去。

麻省理工公开课 - 化学原理课程节选

So, we can say that -- if we have neon here and we want to think about what's isoelectronic, -- f minus would be isoelectronic. We also have oxygen -- what would the charge on oxygen be? Um-hmm, right. 2 minus.

那么，我们可以说--如果我们这里有氖原子,而我们想知道与它等电子的是什么，负一价的氟离子就是与它等电子的，我们还有氧-,氧应该是几价的？没错，负二价。

麻省理工公开课 - 化学原理课程节选