本剂抗酸抗碱抗二价离子，在任何水质中不沉淀。

The dose of anti-acid-alkali divalent ions in any water does not precipitate.

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

因为铝离子为正三价,氧为负二价。

Because aluminum ions have charge of plus three and oxygen ions have charge of minus two.

youdao

I can then subsequently lose an electron from the lithium ion. Lithium ion loses an electron to become lithium 2plus.

然后我能在锂离子中，失去一个电子,锂离子失去一个电子,变为二价锂离子。

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

Because aluminum ions have charge of plus three and oxygen ions have charge of minus two.

因为铝离子为正三价,氧为负二价。

麻省理工公开课 - 固态化学导论课程节选