We talked about this reaction here where we had chloride ion in the gas phase plus sodium ion in the gas phase.

我们在讨论这一个反应,我们有气相的氯原子,与气相的钠原子接触。

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We started with gaseous sodium to make gaseous sodium ion and gaseous atomic chlorine to make gaseous chloride ion through electron transfer.

我们从气态的钠开始,得到气态的钠离子,从气态的氯原子,通过电子转移得到氯离子。

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So we could think about comparing the potassium ion to a sodium ion. They have the same charge of plus one.

我们可以想象比较一下钾离子,与钠离子，它们都同样带有正一价的电荷。

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When an action potential is initiated these ion channels go from their closed state to their open state, when they open sodium can now pass through.

当动作电位形成时,离子通道,从关闭状态转到打开状态,当通道打开时,钠离子就可以通过

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So, for example, in an electrochemical cell, it would be possible to take the sodium ion, give back its electron, and convert it into a metallic sodium, take the chloride ion, remove its electron, and restore chlorine gas.

所以，例如一个电化学的电池，它可能带有钠离子，让它得到电子，把它变成金属钠，得到氯离子，让它失去电子，作为氯气储存。

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However, when that gate is opened, the sodium channel is now going to be incredibly selective and only let through sodium ions and no other type of ion.

但是，当闸门打开的时候，钠离子通道,将会有极高的选择性,不允许除钠离子以外的任何其它离子通过。

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So, for example, if I have a sodium ion over here, and I have a chloride ion over here, where the distance from center to center r I'm denoting as r, this is nucleus to nucleus separation.

所以，比如这有一个钠离子，和一个氯离子，它们中心与中心间的距离,我把它设为，这是原子核和原子和的间距。

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So now, let's get a sodium here, and the chloride ion next to it to the point where they are touching.

所以，我们要有一个钠离子，和氯离子放在,相互接触的一个点上。

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