The formula tells us or absorbed based on the energy difference between the two levels that we're going between, that the electron is transitioning between.

这些公式告诉我们,或发出的光的，频率大小,是基于，电子转移的，两个能级，之间的能量差。

麻省理工公开课 - 化学原理课程节选

Sodium has the electronic structure Now, that's not an octet, but it's not far.

钠的电子结构是,现在它还不是一个八电子结构，但差的并不多。

麻省理工公开课 - 固态化学导论课程节选

So, if we want to go from that stable state to that less stable state, we need to put in a certain amount of energy to our system, that difference between the free electron and the electron bound to the metal.

所以，如果我们想使电子,从稳态到达不够稳定的状态，我们需要引入一定数量的,能量到系统中，即自由电子和束缚于金属的,电子的能量差。

麻省理工公开课 - 化学原理课程节选

So, I've got something that's one electron away from the electronic structure of neon.

所以，我知道了钠的电子结构和氖,只差一个电子。

麻省理工公开课 - 固态化学导论课程节选

So, if, for example, we were looking at a hydrogen atom in the case where we have the n equals 1 state, so the electron is in that ground state, the ionization energy, it makes sense, is going to be the difference between the ground state and the energy it takes to be a free electron.

电离氢原子所需要的能量,如果我们看n等于1的情况,电子在基态，那电离能，很合理的就是基态,和自由电子态的能量差。

麻省理工公开课 - 化学原理课程节选