So we need to go to this second case where we're instead going to think about electronegativity, and we want to think about which atom is the most electronegative.

因此我们需要转到这个第二种情况,来考虑一下电负性，我们需要想想哪个原子的电负性是最高的。

麻省理工公开课 - 化学原理课程节选