So we spent the Christmas holidays exploring the city and seeing the decorations that they have put up.
所以,在圣诞节假期,我们探索了这座城市,欣赏了他们挂上去的装饰品。
Let me now turn to some discussion about the requirements of the class, grades and so forth and so on.
现在我们转到其他讨论上去,关于这个课程的要求,评分等等等等。
So, that's the kind of stuff: a little bit of background about myself. So now, 1 let's talk about the perspective of 3.091 All of this will be posted. You can take notes.
就是这些事情,我自己的,一点背景介绍,现在,我们谈谈这门课程的远景1,这些都会放到网站上去,你们可以记笔记。
- These ones should curl, see if I can - oh, not bad. Let's run it.
这些东西可以卷上去,让我们看看,结果不错,让我们来运行一下程序。
It's kind of gruesome but we know there are some things you don't need your brain for.
听上去有些可怕,但却使我们知道了,有些活动是无需大脑参与的
That sounds interesting. Can you tell us more about the a cappella group?
听上去很有趣。你能告诉我们更多关于无伴奏合唱团的事情吗?
That sounds interesting. Could you tell us more about the documentary?
听上去很有趣。你能给我们多说说那个纪录片吗?
And I know it sounds kind of crazy but we have a lot of fun as you can tell.
我知道听上去很疯狂,但我们相处得很快乐,你们看得出。
This is a little bit of a tricky experiment, so we decided we'll just smoosh it all in, and we'll actually be able to account for it, because we'll take into account the area of all of those atoms.
因为我们要,考虑所有原子的面积,我觉得这个,黑板是不能自动上去的,好了,我们知道。
And, we are going to post everything on the website.
我们还会将,所有的东西都发布到网站上去。
So here we have that graphed here, Z we have atomic number z graphed against ionization energy, so, let's fill in what the actual atoms are here, and we can see in general, yes, we're following the trend.
这就是我们要画的,横坐标是原子序数,纵坐标是电离能,让我们把真正的原子填上去,我们可以看出,总体来说,没错,满足规律。
So, let's have you try one more, if we can switch over and talk about a 3 d orbital.
让我们再来看一个,转到课堂题目上去,我们来看看3d轨道。
So, when we talked about Lewis structures, we actually assigned electrons to individual atoms or to individual bonds.
当我们讨论Lewis结构时,我们把每个电子指派到,各个原子或键上去。
Because here what we have is some atom that we're studying, in the case, it's going to be a gas, and we hit it with a photon that has some incident energy.
因为这里我们要研究的是一些原子,在这种情况下,一般是气态的,然后我们令一个,具有一定初始能量的光子打上去。
We'll again go back to the website.
我们要回到这个网站上去。
So let's fill it out in this way, 2p keeping in mind that we're going to fill sigma out the pi 2 p's before the sigma.
让我们这样填上去,记住我们先填π,轨道再填。
So we have two electrons in our bonding orbital, but because we use the same rules to fill up molecular orbitals as we do atomic orbitals, so the Pauli exclusion principle tells us we can't have more than two electrons per orbital, so we have to go up to our anti-bonding orbital here.
所以在成键轨道上有两个电子,但因为我们用了和原子轨道时,用的相同的规则,所以Pauli不相容原理告诉我们,一个轨道上不能有两个以上的电子,所以我们需要填充到反键轨道上去。
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