And it turns out that it's actually less than 109 . 5, because those lone pairs are pushing the bonds even further away.

所以结果是它要小于109。,因为孤对会把成键推向更远。

麻省理工公开课 - 化学原理课程节选

So what we see is on ammonia here, 107 we know that it's less than a 109 . 5, it's actually 107, so it's less than a 109 . 5, because of that lone pair pushing down in the bonding electrons.

我们看到在氨分子里，我们知道它比１０９．５要小，它是，所以比109。5要小，因为孤对会把成键电子向下推。

麻省理工公开课 - 化学原理课程节选

So it helps us predict, will we see this, for example, h 2, which we're going to be about to do, we'll see is stabilized because it has more bonding than anti-bonding.

这帮助我们预测，我们等会会看到，比如H2O，我们等会要讲到，我们会看到它更稳定是,因为成键比反键更多。

麻省理工公开课 - 化学原理课程节选