1·Number four, electron affinity.
数字4，电子亲和力。
2·So this reaction is called electron affinity.
整个这个反应称为电子亲合。
3·Electron affinity, however, can be either negative or it can be positive.
但是，电子亲和能既可以是负的，也可以是正的。
4·So let's talk about another periodic trend, this one is called electron affinity.
那么下面我们来讨论一下另一个周期性规律，它被称作电子亲和能。
5·To answer this question you just really want to think about what does electron affinity means.
要想答对这个问题，你只需要好好想一想，电子亲和能的真正意义。
6·So this means nitrogen has low electron affinity, it doesn't actually want to gain an electron.
这意味着氮的电子亲和能很低，它实际上并不愿意得到一个电子。
7·This paper proposed the quantitative relationship between electron affinity and induced effect.
本文提出了电子亲合力与诱导效应之间的定量关系。
8·So most of you recognize, if we switch back to the notes, that they do have a negative electron affinity.
看来大部人都想到了，如果你翻翻讲义的话，它们的电子亲和能确实是负的。
9·Electron affinity is actually the ability of an atom, or we could also talk about an ion to gain electrons.
电子亲和能其实就是一个原子，或者我们也可以讨论离子获取电子的能力。
10·So do you think noble gases would have a high positive electron affinity, a low positive, or negative electron affinity?
那么，你认为稀有气体的电子亲和能，应该是一个高的正值，一个低的正值，还是一个负值？