And remember, we're only talking about valence electrons, so the outer-most shells.
要记得，我们讨论的只是价电子，也就是最外层的电子。
This should make a lot of sense, because we know that a hydrogen has 1 s as it's outer-most or valence orbital, so it can be filled up just with two 1 s electrons.
这也是很合理的，因为我们,知道氢只有，1，s，轨道,这就是它最外层的轨道或者说价轨道，因此只要两个，1，s，电子就可以将它填满。
These elements, unlike the transition elements, do not exhibit variable oxidation states, and their valence electrons are only present in their outer shell.
这些元素，不像过渡金属那样显示出可变的化合价，他们只有最外层电子参加反应。
And, these outer shell electrons are termed valence electrons.
这些外层电子被，称作价电子。
It was assumed that, in a metal, the outer atomic electrons, known as the valence electrons since they are the ones which take part in chemical binding.
曾经假设，金属中原子的外层电子并不是束缚在个别原子上，这些外电子被称为价电子，因为它们是参与化学键的电子。
The outer ring contains the valence electrons.
排在外层的有价电子。
The outer ring contains the valence electrons.
排在外层的有价电子。
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