"But the size and configuration of this facility is inconsistent with a peaceful program."

VOA: standard.2009.09.25

These are all isoelectronic, they all have the same electron configuration. And we can also think about going back to atomic size for a second.

这些都是等电子的，它们都有相同的电子排布，而,我们还可以再回想一下原子尺寸的概念。

麻省理工公开课 - 化学原理课程节选