So if we think about what we would do to actually write out this configuration, we just write the energy levels that we see here or the orbital approximations.

如果我们考虑我们所做的去,实际写出电子构型，我们只是写出我们看到的能级,或者是轨道近似就可以了。

麻省理工公开课 - 化学原理课程节选