It is the mass of the electron.
它指电子的质量。
Number four, electron affinity.
数字4，电子亲和力。
就是电子转移。
But you can't just ditch an electron.
但是你不能仅仅失去那个电子。
我们有了电子。
Let us return to electron waves now.
现在我们再回到电子波上来。
So, the first again is the 1 s 1 electron.
所以首先又是1s电子。
Let's look at electron filling first of all.
让我们先来看看电子填充。
But, I'd give you another one electron system.
但是我给你的是另一个单电子系统。
Or, in my favorite unit, 19.80 electron volts.
或者用我最喜欢的单位，就是19。80电子伏特。
I just want to clarify that it is an electron.
我想澄清的是它是一个电子。
Let's imagine this is the electron in its orbit.
想象一下，电子在它的轨道中。
And that is not true for one electron atoms.
对于单个原子来说，不是这样的。
A meat head with an electron plasma brain inside.
它们有一个肉质的脑袋，但是里面的大脑是电子的。
The electron is not moving at the speed of light.
电子不是以光速运动的。
Each electron bears a single negative charge.
每一个电子都带有一个负电荷。
The magic number is 6.3 quadrillion electron-volts.
神奇的数字是6.3万亿电子伏。
It's got a very low average valence electron energy.
它的平均价电子能很低。
You know it is about two to three electron volts.
你知道他们大约为2 -3伏。
Clearly, helium has the least polarizable electron cloud.
显然，氦的可极化电子云最小。
The spin of the electron was not established at that time.
电子自旋的概念在当时还没有建立起来。
The electron volt is not a unit of potential difference.
电子伏特不是，就是一单位的电子伏特。
An electron in the innermost orbit has the least energy.
最里面的轨道上的电子能量最低。
Let's look at the electron filling in lithium, one, two, three.
让我们看看锂里面的电子填充，一个，两个，三个。
All right, well, oxygen has the highest valence electron energy.
好吧，氧具有最高价电子平均能。
To detach an electron from a metal it must be given energy.
要想从金属中析出一个电子，必须给电子能量。
So, let's move on to some more complicated electron configurations.
让我们看看一些更复杂的,电子构型。
What is the binding energy of the ground state electron in hydrogen?
氢在基态的情况下，它的电子结合能是多少？
So let's think about what the valence electron configuration is here.
让我们看看这里的，电子构型是什么样的。
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