Different understandings of what that piece means gives you different values, and that's a bit of a problem.

应该是半径为1角度为,弧度为2比圆周率的一半，稍微多一点。

麻省理工公开课 - 计算机科学及编程导论课程节选

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。

麻省理工公开课 - 固态化学导论课程节选

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

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。

麻省理工公开课 - 化学原理课程节选

r+ And let's say that sodium has a radius, r plus, r- and chlorine has a radius, r minus, when r is very large in comparison to the radii of the ions, I don't need to draw them this way.

让我们假设钠有半径，是，氯也有半径，是，当r比离子半径大很多的时候，我不需要这样来描述。

麻省理工公开课 - 固态化学导论课程节选

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。

麻省理工公开课 - 化学原理课程节选