Just to get you oriented, this is energy decreasing from zero to progressively negative numbers.

只是为了让你们多了解些这方面的东西，在这里能量,从0开始逐渐递减到负数。

麻省理工公开课 - 固态化学导论课程节选

Whereas, if we go across a row, what we see is that the atomic radius is decreasing.

然而如果我们沿着行来看，我们会看到原子半径在逐渐减小。

麻省理工公开课 - 化学原理课程节选