I thought, well, maybe we can now go to the Periodic Table and figure out what is going on there.

那么接下来，我们可以讲元素周期表了吧,让我们看一下在这儿我们又会遇到什么问题。

麻省理工公开课 - 固态化学导论课程节选

So it looks like not too many more than half of you got this correct, so make sure you can look at your periodic table and figure out how to think about ionization energy in terms of z effective, not just in terms of memorizing what that trend is.

看起来只有一半多一点的人,做对了，所以请大家务必做到能够通过观察周期表,并在考虑电离能时,从有效核电量的观点出发，而不是仅仅依靠记住这个规律。

麻省理工公开课 - 化学原理课程节选