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And this spin magnetic quantum number we abbreviate as m sub s, so that's to differentiate from m sub l.
这个自旋磁量子数我们把它简写成ｍ下标ｓ,以和ｍ小标ｌ有所区分。
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Like, it's harder to get around L.A. because you have to drive everywhere and I really don't like driving.
想要在洛杉矶游玩要比在纽约困难，因为无论去哪都要自己开车，而我确实不喜欢开车。
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So here we have 3 minus l equals 0, because it's an s orbital, minus 1, so we have two radial nodes here.
这里我们有３减去ｌ等于０,因为这是ｓ轨道，减去１,我们有两个径向节点。
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Let's have a little review of the career of the great poet Orpheus as we get it certainly in L'Allegro and Il Penseroso.
让我们看看伟大诗人俄耳甫斯的经历,这在《快乐的人》和《沉思的人》中都有所提及。
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Didn't create a new list. The old l is still there but it's different than it used to be.
它改变了数组，而并没有新建一个数组,老数组l依旧存在。
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There's also The L.A. Times, which you can get now online with no problem from the -you can read every day's newspaper.
洛杉矶时报也提过,你可以在网上轻松找到,你可以读到任何时间的报纸
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n l m s Once we have chosen a certain mix of n, l, m and s, it is used once for that particular atom.
一旦我们选定了一组量子数，它就只能被一个固定原子所有。
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This is a painter called Frans Hals, H-A-L-S.
这是画家法兰斯·霍斯的作品
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L.A.'s not as exciting as New York, I guess. It's more suburban and residential than New York.
我认为洛杉矶没有纽约精彩，她更属于郊区，更适宜居住。
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It turns out there's a new function strlen S-T-R-L-E-N that you probably have not used yet called strlen, S-T-R-L-E-N, programmers early on and still like to be succinct but communicates sufficiently what they mean.
结果这里有个新的函数,你可能没有使用过，叫做，早期的和现在的程序员喜欢简洁地,但是能充分的传达他们的意思。
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STUDENT: PROFESSOR: Oh, I'm sorry. So it's n minus l minus 1.
学生：,教授：不好意思，这是ｎ减去ｌ减去１．
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So, you should know that there's four radial nodes, right, we have 5 minus 1 minus l -- is there a question?
你们要记住这里有四个节点，对吧，５减去１减去ｌ，有问题吗？
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How many bonding electrons does c l have? All right. Let's see, we've got a mixed response here, it turns out it has two bonding electrons.
氯有多少成键电子？好，让我们来看看，大家的回答不太一致，结果应该是两个成键电子。
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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。
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So I show that here, so in green, you have what's called a carboxcylic acid group, a c o o h, which gets converted by s o c l 2 to a c double bond o c l or an acid chloride.
我在这里用绿色表示，我们所说的羧酸族化合物，碳，氧，氧，氢，它被亚硫酰氯转化为,一个碳氧双键与碳氯单键组成的酰氯。
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So when we talk about p orbitals, it's similar to talking about s orbitals, and the difference lies, and now we have a different value for l, so l equals 1 for a p orbital, and we know if we have l equal 1, we can have three different total orbitals that have sub-shell of l equalling 1.
当我们考虑ｐ轨道时，这和ｓ轨道的情形和相似，不同之处在于ｌ的值不一样，对于ｐ轨道，ｌ等于１,我们知道如果ｌ等于１,我们有３个,不同的轨道。
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And the first is l, and l is angular momentum quantum number, and it's called that because it dictates the angular momentum that our electron has in our atom.
第一个就是l，l是,角动量量子数，叫它这个名字,是因为它表明，原子中,电子的角动量是多少。
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And when we talk about l it is a quantum number, so because it's a quantum number, we know that it can only have discreet values, it can't just be any value we want, it's very specific values.
当我们讲，l是一个量子数时，因为它是量子数，我们知道，它只能去分立的值，它不能取到所有的数，它取一些确定的数。
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s We are back over to E as a function of n, l, m and s, only we got there through this other torturous route.
我们回到将E作为函数n，l和，只要我们解决了这个烦人的路径。
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So, first, if I point out when l equals 0, when we have an s orbital, what you see is that angular part of the wave function is equal to a constant.
首先，如果ｌ等于０,那就是ｓ轨道，你们可以看到,它波函数的角度部分是一个常数。
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