So the events that I don't really know the details of, we can just call B1, B2, B3, up through Bn.

由于我不知道某些具体的生理过程,我们可以叫它B1 B2 B3一直到Bn

耶鲁公开课 - 死亡课程节选

So for b 2, which is a single bond, that's 289 kilojoules per mole to break it, and it takes us more energy to break this double bond for carbon, which is 599 kilojoules per mole.

对于B2，它是单键，需要289千焦每摩尔来打破它，而对于碳双键,打破它要更多的能量，等于599千焦每摩尔。

麻省理工公开课 - 化学原理课程节选

Let's just first fill in this for the b 2 case.

让我们先填完这个B2的情况。

麻省理工公开课 - 化学原理课程节选

So this is our valence electron configuration for b 2.

这是B2的价电子构型。

麻省理工公开课 - 化学原理课程节选