负二价的硒离子将是等电子的，因为如果你给硒原子加上两个电子，你会得到,和氪原子相同的电子排布。

So, selenium 2 minus is what's going to be isoelectronic, because if you add two electrons to selenium, you'll get the same electron configuration that you have for krypton here.

youdao

那么，我们可以说--如果我们这里有氖原子,而我们想知道与它等电子的是什么，负一价的氟离子就是与它等电子的，我们还有氧-,氧应该是几价的？

So, we can say that -- if we have neon here and we want to think about what's isoelectronic, -- f minus would be isoelectronic. We also have oxygen -- what would the charge on oxygen be?

youdao

好，这就是等电子离子的概念。

So, that's the idea of isoelectronic ions.

youdao

So, selenium 2 minus is what's going to be isoelectronic, because if you add two electrons to selenium, you'll get the same electron configuration that you have for krypton here.

负二价的硒离子将是等电子的，因为如果你给硒原子加上两个电子，你会得到,和氪原子相同的电子排布。

麻省理工公开课 - 化学原理课程节选

So if we want to write out what that would be, it would just be to say that f minus is isoelectronic with neon.

那么如果我们把它写出来，它应该就是负一价的氟离子与氖原子是等电子的。

麻省理工公开课 - 化学原理课程节选

What you see is that the radius changes with atomic number for constant electron number.

对于等电子数的粒子，离子半径随着,原子数的变化而变化。

麻省理工公开课 - 固态化学导论课程节选