So, this is what happens. You go to the website, there's all these bars down the side, so there's lecture videos.

事情就是这样，你们访问这个网站，在下边有这些栏，还有上课的视频。

麻省理工公开课 - 固态化学导论课程节选

So, if we look on the periodic table, comparing, for example, s to o, if we have s it's below o, what happens to ionization energy as we go down a table?

那么，如果我们看周期表上，比较，比如，硫和氧，硫在氧下面，当我们沿着表向下看的时候,电离能是怎么变化的？

麻省理工公开课 - 化学原理课程节选

So that's exactly what we see as we go down the right branches.

当我们这样做下去,我们就会看到这些。

麻省理工公开课 - 计算机科学及编程导论课程节选

So as we go down we're now adding electrons to further and further away shells, so what we're going to see is that the atomic radius is going to increase as we're going down the periodic table.

当我们向下走时,我们会将电子加在越来越远的壳层上，因此我们将看到原子半径,将随我们沿周期表向下走而增大。

麻省理工公开课 - 化学原理课程节选

As we go down a column, what happens is that the ionization energy decreases.

当我们沿着列向下走的时候，会发现电离能是在降低的。

麻省理工公开课 - 化学原理课程节选