All the elements in the periodic table have a different affinity for electrons.

周期中的所有对电子都有不同的亲和力。

I mean, the periodic table is full.

的意思是，周期已经满了。

Now we have the entire periodic table.

现有了整个周期。

The race to extend the periodic table continues.

扩展周期的比赛仍继续。

Chemists know all the elements on the periodic table.

化学家了解周期里所有的。

And so your question about the periodic table is very interesting.

所以你提出的关于周期的问题非常有趣。

On the periodic table of the elements, Sn is the symbol for what?

的周期上，Sn是什么的符号？

In fact, they make up most of the elements in the periodic table.

事实上，它构成了周期中的大部分。

So now, you did the periodic table and you talked about the human body.

所以你教过周期还有人体部位。

Yes, I asked which is the lightest element in the periodic table.

是的，问周期中最轻的是什么。

The transition metals are the metals in the middle part of the periodic table.

过渡金属指周期中位于中间位置的金属。

You could break down each line of the periodic table into a short story.

你可以把周期的每一行分解成一个小故事。

It's a — it's the periodic table of elements, it's — it's wonderful.

它是——它是周期的，它——它很棒。

Let's say your chemistry teacher asks you to memorize a periodic table for example.

比如说，你的化学老师让你记住一张周期。

Back then, there wasn't the single universal periodic table that we have today, either.

那时，也没有今天拥有的统一普遍周期。

They don't really get much more far off the periodic table than that.

它周期中确实没有处于太靠后的位置。

Famous physicist Richard Feynman also predicted an end to the periodic table.

著名物理学家理查德·费曼也预言了周期的终结。

“Mendeleyev’s Dream” by Paul Strathern is the best book I've ever read on the periodic table.

保罗·斯特拉森的《门捷列夫的梦》是读过的关于周期的最好的书。

I mentioned that uranium is the heaviest element in the periodic table, but which is the lightest?

提到过铀是周期中最重的，但哪个是最轻的呢？

Hydrogen has one proton, helium two, lithium three, and so on up the periodic table of elements.

氢有1个质子，氦有2个，锂有3个，按周期上的排列顺序即可判断。