When we talk about orbitals in multi-electron atoms, they're actually lower in energy than the corresponding H atom orbitals.
当我们讨论多电子原子的轨道时，它们的能量实际上比对应的氢原子轨道要低。
Doing those probability density dot graphs, we can get an idea of the shape of those orbitals, and we know that they're spherically symmetrical.
通过那些概率密度图，我们可以知道轨道的形状，我们知道它们是球形对称的。
这是原子轨道。
So now let's fill the orbitals.
现在让我们把这些轨道填满。
So, bonding orbitals are down here.
所以成键轨道在下面。
让我们占据这些轨道。
So we end up having 2 orbitals here.
所以我们得到2个轨道。
What will we call that in terms of orbitals?
我们从轨道的角度，怎么命名它？
What is the filling sequence of electrons in orbitals?
什么是电子在轨道上的排布顺序呢？
And then we are going to construct molecular orbitals.
接着我们就建立分子轨道。
So the first is that the orbitals are similar in shape.
首先是轨道的形状相似。
So now let's go ahead and fill in our molecular orbitals.
让我们继续填充分子轨道。
Electrons fill orbitals from lowest energy to highest energy.
电子从最低能级到最高能级，填满轨道。
Linear combination of atomic orbitals into molecular orbitals.
原子轨道的线性叠加，成分子轨道。
That's what we call degenerate orbitals, they're the same energy.
我们称之为简并轨道，它们具有相同的能量。
So actually, first let's take a look at how we got these orbitals.
首先我们来看一看我们怎么得到这些轨道的。
When we're talking about orbitals, we're talking about wave functions.
当我们说轨道的时候，我们说的是波函数。
So we'll see specifically why it is that the s orbitals are lower in energy.
所以我们会特别地看到，为什么s轨道的能量是较低的。
We did it for the s orbitals, we can also do it for the p, we can do it for the d.
我们对s轨道这样做了，我们也可以对p轨道这样做，对d轨道这样做。
So we can add three hydrogen atoms here, and fill in our other orbitals right here.
我们可以加三个氢原子到这里，填满其它的轨道。
The only thing that is different about these orbitals is their orientation in space.
这些轨道唯一的不同之处,是在空间的方向不同。
Well, essentially what that tells is that these s orbitals are spherically symmetrical.
实际上它告诉我们，这些s轨道，是球对称的。
We'd started on Monday talking about radial probability distributions for the s orbitals.
我们从星期一开始讨论了，s轨道的径向概率分布。
So we would label our anti-bonding orbital higher in energy than our 1 s atomic orbitals.
我们应该把反键轨道标在，高于1s原子轨道能量的地方。
So in molecular orbital theory, what we did was we named orbitals based on their symmetry.
在分子轨道理论中，我们基于轨道的对称性给它们命名。
All right, so let's consider our methane situation now that we have our hybrid orbitals.
好，让我们考虑甲烷的情形，既然我们有了杂化轨道。
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