-
And so, for today, for example, it says Classification Schemes, Mendeleev, Atomic Structure, A Readings Chapter 1, Chapter 2, Appendix A.
今天，举个例子，讲的是分类法，门捷列夫，原子结构，阅读第1，第2章，和附录。
-
So, for example, down here I wrote that it was n 2 and that it was h 2, but when I re-wrote the molecules up here, you saw that it's an h h single bond where it's a nitrogen-nitrogen triple bond.
比如，在这下面我写的是氮分子2,而这个是氢分子，但我在上面把这些分子的形式改写了，大家可以看到,这是一个氢与氢之间的单键，含一个氮与氮之间的三键。
-
You know, if you're wandering through Harvard Square and you see an out-of-work Harvard grad, they're handing out examples of square roots, they'll give you an example and you can test it to see is the square root of 2, 1.41529 or whatever.
你知道，如果你从哈佛校园里穿过去,你看见了一个失业校友，正在派发平方根的示例，他们会给你一个例子,而你会检查2的平方根是1。41529或者别的什么。
-
So, for example, what we're going to do is we're going to test does 2 dominate 1?
比如说,我们现在来验证一下,策略2是否优于策略1
-
Just to give you an example, here's one list, 1 2 4 30 3121724 Here's another list, 12430.
举个一例子来说，一个列表：3，12，17，24，另一个列表：
-
So for example, if we think about fluorine, 1 s 2 2 s 2 2 p 5 that has an electron configuration of 1 s 2, 2 s 2, 2 p 5, so all we would need to do is add one more electron to get the same configuration as for neon.
比如，如果我们考虑氟原子的话，它的电子排布是，因此我们所需要做的就是给它加上一个电子,使得它与氖原子的电子排布相同。
-
So, for example, if we talk about the psi2 1 1 2, 1, 1 state label, that's just psi 2, 1, 1.
例如如果我们说,2，1，1态，它是。
-
And the thing you should notice here is that it's doing a lot of the same things over 2 1 and over again. So, for example, we'll see 2, 1 2 1 here. And 2, 1 here.
在这里你要注意的是,它不断在重复同样的工作,例如我们看这里的1,还有这里的。
-
And the last example that we're going to talk about is thionyl chloride, so it's s o c l 2. This is another good step forward, because now we actually have four different atoms in our molecule.
我们要讨论的最后一个例子,是氯化亚砜，就是硫，氧，氯，二，这又是一个进步，因为我们的分子中现在有四个不同的原子了。
-
For example, if Firm 2 shut down and Firm 1 produced its monopoly profits, that is, a monopoly quantity, that would maximize firm profits.
比如公司2停产而公司1生产垄断产量,垄断产量会使行业利润最大化
-
So, let's, for example, look at nitrogen. So n 2, we can do the chart here in green, so it's the green dotted line, and what we see is that we have now defined this energy as where the 2 nitrogen atoms are separated.
那么，让我们举个例子，看一下氮，那么氮分子，我们可以把它用绿色曲线画在这，这是绿色的虚线，可以看到,我们已经定义为零点能，当两个氮原子分离时。
-
So it helps us predict, will we see this, for example, h 2, which we're going to be about to do, we'll see is stabilized because it has more bonding than anti-bonding.
这帮助我们预测，我们等会会看到，比如H2O，我们等会要讲到，我们会看到它更稳定是,因为成键比反键更多。
-
We're getting further away from the nucleus because we're jumping, for example, from the n equals 2 to the n equals 3 shell, or from the n equals 3 to the n equals 4 shell.
我们将会离原子核越来越远,因为我们在跃迁，比如从，n，等于，2，的壳层到n等于，3，的壳层，或者从，n，等于，3，的壳层到n等于，4，的壳层。
-
OK, for example, I might say point p1 is that list, x is 1, y is 2.
和y坐标的数组是很简单的1,那么，例如，我可能会说点。
-
- 2. So for example So our conjecture here is that 2 dominates 1.
策略2,-例如策略2,我们推测策略2优于策略1
-
So, if we think of just an example, 2 we could say that 4 l equals 2, what would be our lowest value of m sub l?
举个例子，如果我们说l等于，那m小标l，最小值是多少？
-
Once you're doing this on your own, -- especially, for example, on exam 2, which is a ways down the road, you won't be able to look at those steps, so you need to make sure that you can go through them without looking at them, but for now we can look at them as we are actually learning how to draw the Lewis structures, and rather just go through them step-by-step, it's more interesting to do it with an example.
每当你要画一个路易斯结构的时候，特别是，比如，在第二次考试中，在不远的将来，你将看不到这张表，因此你需要确保自己在不看这张表,的情况下也能按照上面的流程来画，但是目前我们是可以看着这张表,来学习如何画路易斯结构的，而相比于一步一步地讲，通过例子来演示一下会更有意思。
-
So let's look at another example, Li2 let's take lithium 2 and see what we can figure out here. In lithium 2, we have two atoms of lithium, each have three electrons in them.
让我们看另外一个例子，我们看一看,看我们能得到什么，在Li2中，我们有两个Li原子，每个带有3个电子。
-
So, for example, for boron, 2s2 now we're dealing with 1 s 2, then 2 s 2, and now we have to move into the p orbital 2p1 so we go to 2 p 1.
举例来说对于硼，现在我们知道有1s2然后，现在我们必须,移至p轨道即。
-
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。
-
So now let's look at an example where we talk about using these 2 p z orbitals, so let's look at oxygen.
现在让我们来看一个要,用到2pz轨道的例子，让我们来看一下氧。
-
For example, for the 2 s, again what you see is that the multi-electron atom, its 2 s orbital is lower in energy than it is for the hydrogen.
举例来说对于2s轨道，在多电子原子，中可以看到,它的2s轨道的能量低于氢原子的。
-
So, for example, if we look at the 2 s orbital of argon, it's going to have the same amount of nodes and the same type of nodes that the 2 s orbital for hydrogen has.
所以举例来说，如果我们看氩的2s轨道，它有相同数量的节数,和相同类型的节点,对于氢的2s轨道。
-
So, for example, if we're talking about the n equals 2 state, all of these four orbital descriptions are going to have the same energy.
例如，当我们说n等于2的态，所有这四个轨道的能量,都是相同的。
-
All right, I want to do one more at homonuclear example here, and this is n 2.
好的，我想要再讲一个同核的例子，这就是N2。
-
So finally, if we talk about our last example of when n is going to be equal 2, l -1 and then minus 1 for m.
最后我们要讲的,这个例子，是n等于2时，等于1，we，can，have，2，，1，for，l,而m等于。
-
So, for example, it's not just the 2 p that we could actually take an electron from, we could also think about ejecting an electron from the 2 s orbital.
比如，我们不只可以从，2，p，轨道上,打出一个电子，还能考虑从，2，s，轨道上,发射出一个电子。
-
But we haven't yet addressed why, for example, a 2 s orbital islower in energy than the 2 p orbital, or why, for example, a 3 s orbital is lower in energy than a 3 p, which in turn is lower than a 3 d orbital.
但是我们还没有强调为什么，举个例子一个2s轨道能量低于2p轨道,或者为什么，举例来说它依次低于3d轨道,屏蔽一个3s轨道的能量小于3p轨道。
-
So, for example, 1s1 again we see hydrogen is 1 s 1, helium we say is 1 s 2, or 1 s squared, 1s2 so instead of writing out the 1 s 1 and the 1 s 2, we just combine it 1s22s1 as 1 s squared, lithium is 1 s 2, 2 s 1.
简化符号所以举例来说，我们又看到氢是，氦是1s2或者1s的平方，所以不是将它写为1s1和1,而是我们将它合并为1s的平方,锂是。
-
All right, so let's go back to electrons configurations now that we have an idea of why the orbitals are listed in the energy that they are listed under, 2p why, for example, the 2 s is lower than the 2 p.
好的我们返回来到电子构型,现在我们有一个思路知道,为什么轨道,以能量列出来，举个例子2s低于。
应用推荐