-
5% And, it turns out that about 75% of the periodic table falls into this category.
而且，它表明元素周期表的,都属于这个种类。
-
You are allowed to use on the test the official version of the Periodic Table of the Elements which most of you should have by now.
在测试中你们可以使用,化学元素周期表的官方版本,你们应该大部分都有了吧。
-
So, that's actually the electron configuration we have when we're talking about copper and some other exceptions in the periodic table that you're going to be looking at.
因此，这才是铜原子真正的电子排布,而且我们在元素周期表中,会看到与铜原子类似的,其他例外的情况。
-
If you look on the Periodic Table this is 598 atomic hydrogen. And, sure enough, there is 13.598, which is this number here in electron volts.
如果你查找元素周期表上的氢原子,毫无疑问，它的电离能就是13。,这个数值也是电子伏的值。
-
We have a table of the elements with properties varying periodically with atomic mass, so we compress all of that information and refer to it as the Periodic Table.
我们有一个元素表，其中的元素的特性,随着原子质量的改变而引起周期性的变化，所以我们将所有的信息精简,将它变成一个周期表。
-
It is just down the hall from this lecture theater. And you bring the Periodic Table and the Table of Constants and a calculator and something to write with.
就在这件教室下面的大厅那,你们带上元素周期表和常数表,还有一个计算器和一些写的东西。
-
And there's a lot we can explain by talking about what we see in the periodic table in terms of what different trends are in grouping different elements in different spots within the periodic table.
我们可以解释很多,通过讨论元素,周期表中的内容,按照各种不同的规律,将周期表中不同位置的元素分组归类。
-
Depending on what kind of chemistry you go in to, you might accidentally memorize parts of the table, which is fine, but what you really want to know how to do is know how to use the periodic table.
取决于你今后从事哪个方向的化学研究，你可能会不经意地记住周期表的某一部分，这就够了，但是要注意,你真正需要知道的是如何使用元素周期表。
-
See, if you know the Periodic Table then you know where elements are relative to one another.
如果你足够熟悉元素周期表,你可以知道,任何元素与另外元素的关系。
-
So, here we have a picture of Dmitri Mendeleev, who is one of the scientists responsible for first compiling the periodic table.
这是一张德米特里？门捷列夫的画像，他是最早制作,元素周期表的科学家之一。
-
So, then all we need to do to determine which elements that corresponds to is take a look at our periodic table.
因此，我们需要做的只剩下,在元素周期表中寻找,对应的元素有哪些。
-
We need to add something else in order to explain what is going on in the Periodic Table.
我们需要引其他一些东西进来才能解释清楚,元素周期表中发生的这种现象。
-
So specifically, what we're asking here is as we go across the periodic table, we want to consider which has the smaller ionization energy.
具体地说，我们这里要问的是,从周期表来看，你认为,哪一个元素的电离能更低。
-
And since carbon's electronegativity is higher than that of hydrogen, which you would expect from where carbon lies on the Periodic Table. Think about it.
碳的高于氢的,你也可以从碳在，元素周期表上的位置,判断出来，试想一下。
-
So as we go across the row, and this is my beautiful picture of a periodic table here.
那么当我们沿着行向右走的时候，这是我漂亮的元素周期表。
-
And what we can do is we can also use the Schrodinger equation to make these accurate predictions for any other atom that we want to talk about in the periodic table.
我们能做的是,我们可以使用,薛定谔方程去做一些,关于我们想要讨论的元素周期表,中任何一个原子的预测。
-
So if you flip the info page over on the back here, what you'll see is the periodic table, this is the same one that I've handed out in the last two lectures - the periodic table without any electron configurations.
将这张纸翻过来，你可以看到一个元素周期表，这与我们前两次课发过的,是一样的,-没有任何电子排布的周期表。
-
So let's turn our attention to a new topic, which is thinking a little bit about the periodic table, and also talking about periodic trends.
我们的新主题上，我们将会讨论一点关于元素周期表的知识，同时也会讲一讲周期性规律。
-
The period of table's on the back page of your notes if you don't see that there.
元素周期表在你们讲义的封底,如果你没看到的话。
-
And then there is this group of about half a dozen right down the diagonal middle.
然后有一个包含六个元素的元素组,在周期表的对角线的中部。
-
If we look at carbon, if you look on your Periodic Table you will see this notation next to carbon, What are we learning here?
如果我们观察碳，如果你查阅元素周期表,你会看到碳旁边的符号，从这里我们能了解到什么呢？
-
Second thing, we started talking about the periodic table and I believe that it's a hallmark of any educated person in the 21st century who is technically literate to know the periodic table by heart.
第二点，我们之前讨论过元素周期表,我相信这是个标志性的特征,对于那些在21世纪里,用心去学习,元素周期表的人来说。
-
Donors are over here, the metals on the left end of the Periodic Table.
在这里，在元素周期表的左下部分的金属。
-
They're black with colored elements of the periodic table.
它们是黑色的,中间还有些元素周期表上的彩色元素。
-
And now we can rationalize what is going on in the Periodic Table.
现在我们能合理解释,元素周期表上的东西了。
-
So, how many distinct, so again, we're talking about distinct kinetic energies, a spectrum for the element hafnium, 72 and I'll tell you here that it has a z of 72, so you don't have to spend two minutes searching your periodic table.
好，有多少分立的……还是一样，我们讨论的还是不同的动能，铪元素的光谱中出现，而且我来告诉大家铪的原子序数是，这样你就不用因为在元素周期表中找它,而花费两分钟的时间了。
-
So, this is what it's going to look like.
这就是元素周期表看上去的样子。
-
On the right side of the Periodic Table.
元素周期表的右半部分。
-
Pick something about the Periodic Table.
选个关于元素周期表的东西。
-
This is right off your Periodic Table.
这个表在你们的元素周期表下面应该有。
应用推荐