同样的，如果我们观察二价的氟，它是每摩尔160焦。

Likewise, if we look at fluorine in its diatomic molecule, it is 160 kilojoules per mole.

youdao

那么我们称它为第三电离能，或者负的束缚能，还是，2，s，轨道的，但现在我们是从正二价硼离子开始的。

So, what we call this is the third ionization energy, or the negative of the binding energy, again of the 2 s orbital, but now it's in boron plus 2 to we're starting with.

youdao

与古巴的芬莱研究所合作，Bio - Manguinhos正在与世卫组织合作，确保在下一个流行季节之前供应多达1000万剂二价AC群脑膜炎疫苗。

In partnership with the Finlay Institute in Cuba, Bio-Manguinhos is working with WHO to ensure a supply of up to 10 million doses of bivalent ac meningitis vaccine by the next epidemic season.

youdao

And, likewise, if we look at fluorine in its diatomic molecule, it is 160 kilojoules per mole.

一样的，如果我们观察二价的氟，它是每摩尔160焦。

麻省理工公开课 - 固态化学导论课程节选

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

What about lithium 2+?

那么二价的锂呢？

麻省理工公开课 - 固态化学导论课程节选