But, we know for example that magnesium, when it reacts, it reacts with both of its electrons, not just one of its electrons.

但是我们知道，拿镁来说，当它发生反应的时候，并不只是，某一个电子反应，而是两个价电子都发生反应。

麻省理工公开课 - 固态化学导论课程节选

Well, for our purposes, both are correct and we'll know how to figure this out on tests.

这个,对课堂而言,两种都正确,我们会在测试中明白原因的

耶鲁公开课 - 聆听音乐课程节选

So, this is exactly how Rutherford did discover that these particles were present and made this new model for the atom that we now know has both a nucleus, and we know the size, and also has electrons.

他提出了一个,新的原子模型,这里面有一个原子核,和一个电子，原子核的尺寸是知道的。

麻省理工公开课 - 化学原理课程节选

We know that the orbitals for multi-electron atoms depend both on n and on l.

我们知道对于多电子原子轨道,是依赖于n和l的。

麻省理工公开课 - 化学原理课程节选