In this case, it's called the ionization energy, plus whatever kinetic energy we have left over in the electron.
在这种情况下,它就是电离能,剩余部分将转化为,出射电子的动能。
One major difference between electron affinity and ionization energy is that when we talked about ionization energy, remember ionization energy always has to be positive.
电子亲和能,与电离能之间最大的不同就在于,当我们提到电离能的时候,记得电离能总是正的。
This is the second ionization energy. That is to say the ionization energy of the second most electron.
这是二级电离能,这就是说,电子数第二多的电离能。
So, if we want to think about what the first ionization energy is of boron, what you want to do is write out the electron configuration, because then you can think about where it is that the electron's coming out of.
如果我们要考虑,硼的第一电离能,你首先要做的是写出它的电子排布,因为在这之后,你才能知道拿走的是哪里的电子。
If something has a high ionization energy, it means that it really, really, really does not want to give up an electron.
如果某个东西有很高的电离能,这意味着它非常非常,非常不愿意失去一个电子。
So, we can think about trends in electron affinity just like we did for ionization energy, and what we see is a similar trend.
那么,我们可以想一想电子亲和能的,周期性规律是怎样的,就像我们刚才分析电离能那样。
I think I labeled this one two, 3 ionization I labeled three, 4 electron affinity I labeled four 5 and crystallization I labeled five.
这一步为步骤,离子化为步骤,电子亲合为步骤,结晶为步骤。
The first ionization energy of lithium is about 5.4 electron volts per atom.
锂的一级电离能,大约是每原子5。4电子伏。
You can think of electron affinity as sort of the ionization in reverse of the ion.
电子亲合,是离子化的逆过程。
So, second ionization energy simply means you've already taken one electron out, now how much energy does it take for you to take a second electron out.
第二电离能简单地说就是,在你已经拿走一个电子以后,再拿走第二个电子,所需要消耗的能量。
So if we think about the upper right hand part of the quadrant, well, this is where we're going to have high electron affinity and high ionization energy, so we're also going to see high electronegativity here.
那么让我们来看看右上方的部分,好,在这里我们将会有高的电子亲和能,与高的电离能,因此我们会看到这里的电负性也很高。
This is called ionization, gas phase species loses an electron.
而这个过程是离子化,气相组分失去一个电子。
And let's look at the final kinetic energy that we'd observe in this spectrum, which is 384 electron volts, so what is that third corresponding ionization energy?
然后让我们来看一下,在光谱中观测到的,最后一种动能,它大小是,384,电子伏,那么这相应的第三种电离能是多大?
We'll then take a turn to talking about the periodic table, we'll look at a bunch of periodic trends, including ionization energy, electron affinity, electronegativity and atomic radius.
然后我们再开始讲元素周期表,我们会看到很多周期性规律,比如电离能,电子亲和能,电负性以及原子半径。
We talked about ionization energy, electron affinity, we talked about electronegativity, which is just kind of a combination of the first two, and then ended with atomic radius here.
我们讲了电离能的,电子亲和能的,还讲了电负性的,也就是前两个的组合,最后讲了原子半径的。
So we can use an equation to relate the incident energy and the kinetic energy to the ionization energy, or the energy that's required to eject an electron.
因此我们可以用一个公式将入射能量,与动能和电离能,就是发射出一个电子所需要的能量关联起来。
If you see a problem that asks you, for example, the third ionization energy versus taking a second electron out of the 2 s in a photoelectron spectroscopy experiment, those are two very different things.
如果你遇到一个题目问你的是,比如说,是第三电离能,还是在光电子能谱实验中从,2,s,轨道中,拿走第二个电子,这可是两个完全不同的问题。
Same sort of subtraction problem, what do we have for the ionization energy of the 2 s electron?
进行类似的减法运算,得到的,2,s,电子的电离能应该是多大呢?
So if that's the case doing a quick little calculation, what would the ionization energy be for a 2 p electron in neon?
么请稍微计算一下,氖原子的,2,p,电子的,电离能是多大?
So we are really looking at this reaction here H+ for ionization. It is H gas neutral goes to H plus in the gas phase plus the electron. And, furthermore, we can have multiple ionization energies.
所以我们真正看到的是,电离,它是在气相中H变为,和电子的过程,还有,我们能电离能加倍。
And what we say when we talk about the delta energy is I E 2 that this is going to be equal to i e 2, or the second ionization energy, or we could say the negative of the binding energy of a 2 s electron in b plus.
那么我们说,Δ,E,应该等于,或者说第二电离能,也就是正一价硼中,2,s,电子的,束缚能的负值。
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。
应用推荐