We are talking about probability, but what we're saying is that most probable radius is further away from the nucleus.

我们说的是概率，也就是说它的最可能半径,离原子核更远。

麻省理工公开课 - 化学原理课程节选

We are expecting to see that it decreases because it's feeling a stronger pull, all the electrons are being pulled in closer to the nucleus, so that atomic size is going to get smaller.

我们将看到它是减小的,因为电子会感受到越来越强的吸引力，所有的电子将会被原子核拉得越来越近，所以原子半径将越来越小。

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The radius of the nucleus as compared to the radius of the entire atom is on the order of about one to 10,000.

原子核的半径,相对于整个原子的半径来说,是1比10000这个数量级。

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And what is discussed is that for a 1 s hydrogen atom, that falls at an a nought distance away from the nucleus.

我们讨论了对于氢原子１ｓ轨道，它的最可能半径在距离原子核ａ０处。

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So, basically what we're saying is if we take any shell that's at some distance away from the nucleus, we can think about what the probability is of finding an electron at that radius, and that's the definition we gave to the radial probability distribution.

本质上我们说的就是,如果我们在距离原子核,某处取一个壳层，我们可以考虑在这个半径处,发现电子的概率，这就是我们给出的,径向概率密度的定义。

麻省理工公开课 - 化学原理课程节选

For example, when we're talking about radial probability distributions, the most probable radius is closer into the nucleus than it is for the s orbital.

举例来说当我们讨论径向概率分布时,距离原子核最可能的半径是，比s轨道半径,更近的可以离原子核有多近。

麻省理工公开课 - 化学原理课程节选

If I look at something that goes as n squared, if this is the edge of the nucleus here and if this is r1, 4 it says when n goes to two the radius goes to four.

如果在原子核外侧,我们发现某一半径和n的平方成正比，也就是说当n为2时半径等于。

麻省理工公开课 - 固态化学导论课程节选

So, I want to contrast that with another concept that seemed to be opposing ideas, and that is thinking about not how far away the most probable radius is, but thinking about how close an electron can get to the nucleus if it's actually in that orbital.

我要将它和另外一个,看起来相反的概念相比较，我们不是考虑,最可能半径离原子核有多远，而是考虑如果电子在那个轨道上,能多接近原子核。

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The other thing that I want you to notice, is if you look at the most probable radius, for the 2 s orbital it's actually out further away from the nucleus than it is for the 2 p orbital.

另外一个你们要注意的地方就是，如果你们看它的最可能半径，2s轨道比2p轨道的,要更加远离原子核。

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So again, what we see is the same pattern where the most probable radius, if we talk about it in terms of the d, that's going to be smaller then for the p, and the 3 p most probable radius is going to be closer to the nucleus than it is for the 3 s most probable radius that we're looking at.

同样的，我们可以看到相同的行为,ｄ轨道的，最可能半径，比ｐ轨道小，3p轨道的,最可能半径,比3s轨道离原子核更近。

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