And you would expect that that would be a much stabler compound because, instead of plus one attracting plus one, now you have plus two attracting minus two.
可以预见,这将会是更稳定的化合物,因为不再是一价正离子吸引一价负离子,而是二价正离子吸引二价负离子。
For example, the positive ions, these are electron deficient.
例如,正离子,是缺少电子的。
So a plus two ion means that we're removing two electrons from the atom and the electrons that we're going to remove are always going to be the highest energy electrons.
一个2价正离子,我们要移除的两个电子,我们要移除的两个电子,将会是,最高能量的电子。
If instead we had a positive ion, a cation, what we would have to do is subtract 1.
如果我们有一个带正电的离子,一个正离子,那我们就需要再减去一个。
It comes from the fact that in an electrochemical cell, the cations are those that are reduced.
这来源于在电池中,正离子是被减少的。
So, by the same logic, that means that all of our positively charged ions are, in fact, going to be smaller in terms of radius, compared to their neutral parents.
那么,按照相同的逻辑,我们所有的正离子,事实上,它们的半径都会缩小,与它们的中性母体相比。
Look at beryllium 2 plus, very tiny, charge plus two.
例如铍二正离子,非常小,带2个单位正电。
So, let's say we're asked for the plus two ion.
我们说我们被要求解2价正离子。
This is denuded of an electron, it is Na plus.
这边是裸电子的,是钠正离子。
So, helium plus is a one electron system.
所以氦正离子是一个单电子系统。
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