• 如果我们捕获所有价电子会怎样呢?

    What if we capture all of the valence electrons?

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  • 我们通过叫做平均电子来解决一问题

    We solve this problem by a quantity called the average valence electron energy.

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  • 现在这个结构下讨论这些价电子可能会我们化学反应有更深的理解。

    Now with this framework, I said that talking about these valence electrons might give us some insight into chemical reactivity.

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  • 我们都知道因为氧气中的硫具有不同平均电子它们的电子亲和力不同。

    We know that because the sulfur and the chlorine in the oxygen have different average valence electron energies, they'll have different electron affinities.

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  • 然后考虑所有价电子

    Then it says, count all the valence electrons.

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  • 我们下一步考虑的是价电子

    Our next step is thinking about valence electrons.

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  • 他们较低平均电子能。

    These have low average valence electron energies.

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  • 话说,就是所有价电子平均能量

    In other words, if the average energy of all the valence electrons.

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  • 但是如果我们捕获所有价电子怎样呢。

    So, what if we capture all of the valence electrons.

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  • 所以lewis结构里,8价电子

    So what we should have is 8 valence electrons in our Lewis structure.

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  • 我们七个价电子

    So we have seven valence electrons.

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  • 同样的,我们讨论价电子

    Again, we're just talking about the valence electrons.

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  • 几个价电子

    How many valence electrons are in chlorine?

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  • 所做全部,考虑到了价电子关系

    And, all he's done is leave the valence electrons associated.

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  • B2的价电子构型

    So this is our valence electron configuration for b 2.

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  • 那么四个价电子

    So we're talking about four valence electrons for carbon.

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  • 好的,把具有最低平均电子元素画在中心

    And, it says, OK, center the element with the lowest average valence electron energy.

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  • 价电子很高

    Chlorine has a high valence electron energy.

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  • 那么我们总共二十六个价电子,在这种情况下。

    So we end up having 26 valence electrons that we're dealing with here.

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  • 我们来看一下C2的,价电子构型怎么样的。

    So let's think about what this valence electron configuration is for c 2.

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  • 了,就是价电子轨道理论的,简单解释

    All right, so that's really all there is to thinking about valence bond theory in terms of the most simple explanation here.

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  • 记得,我们讨论只是价电子,也就是外层的电子

    And remember, we're only talking about valence electrons, so the outer-most shells.

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  • 但是这里我们加上一个那么跟刚才一样,我们十个价电子

    But here we're going to add 1, so again, we have 10 valence electrons.

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  • 平均电子,5。2电子11电子伏要

    Its average valence electron energy is 5.2 electron volts, which is a heck of a lot less than 11.

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  • 我们现在可以考虑怎么价电子理论中描述这个键。

    So, we can think about now how do we describe this bond in valence bond theory.

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  • 中心原子与其相邻原子之间,连上单键然后减掉2个价电子

    OK, then it says draw a single bond from each surrounding atom to the central atom, and subtract two valence electrons.

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  • 之前我们引入价电子理论轨道概念

    And to do this we're going to introduce valence bond theory, and the idea of hybridization of orbitals.

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  • 那么第七要做看看,我们还有没有剩下价电子

    So, what we do as our seventh step is then figure out if we have any extra valence electrons left at all.

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  • 要说我们如果,只考虑价电子可以得到相同

    So what I want to tell you is we also always get the same bond order if we instead only deal with the valence electrons.

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  • 通过周期表可以看到的正下方,因此它们两个都价电子

    By looking at the periodic table it's right underneath oxygen, so those both have 6 valence electrons.

    youdao

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