And first, on your lecture notes, I start with atomic radius.
首先，在大家的讲义上，我是从原子半径开始的。
This includes atomic radius and the idea of isoelectronic atoms.
包括原子半径，以及等电子原子的概念。
Whereas, if we go across a row, what we see is that the atomic radius is decreasing.
然而如果我们沿着行来看，我们会看到原子半径在逐渐减小。
And if we're talking about atomic radius, essentially we're talking about atomic size.
如果我们在讨论原子半径，实际上我们讨论的是原子的尺寸。
So, keep that in mind when we're talking about atomic radius, I'm not suddenly changing my story and saying, yes, we do have a distinct radius.
因此，当我们讨论原子半径的时候要时刻记住这一点，我并不是在突然改变自己的说法，说是的，我们的确有一个准确的半径。
Using the density data of homojunction metal and the analytical data of crystal structure, the metal atomic radius is calculated.
通过单质金属的密度数据和晶体结构分析的数据，实现了金属原子半径的科学推算。
And immediately it should probably come into your head that we don't actually have an atomic radius that we can talk about, right?
一提到这点你就应该立刻想到，我们并没有一个真正的原子半径，可以讨论，对吗？
We'll then take a turn to talking about the periodic table, we'll look at a bunch of periodic trends, including ionization energy, electron affinity, electronegativity and atomic radius.
然后我们再开始讲元素周期表，我们会看到很多周期性规律，比如电离能，电子亲和能，电负性以及原子半径。
And all ion channels are selective for a single type of ion, and we can think about how that selectivity takes place, and that's where this idea of atomic radius is going to become very important.
所有的离子通道都是仅对某一种离子具有选择性的，而我们可以来想一想这种选择性是如何发生的，这也就是原子半径这个概念将会变得，非常重要的地方。
So as we go down we're now adding electrons to further and further away shells, so what we're going to see is that the atomic radius is going to increase as we're going down the periodic table.
当我们向下走时，我们会将电子加在越来越远的壳层上，因此我们将看到原子半径，将随我们沿周期表向下走而增大。
Is the Atomic Radius of Noble Gases Large Specially?
惰性气体元素的原子半径特别大吗？
Is the Atomic Radius of Noble Gases Large Specially?
惰性气体元素的原子半径特别大吗？
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