He said that the percent ionic character, and this is within a bond, not for a compound, for a covalent bond.
他提到离子百分数,是指一根键中,并非一个分子中。
Now, remember, the formation of the ionic bonds was from group one and group two, and over here with group six and seven.
现在请记住,离子键的形成,从第一族和第二族元素,与六七主族的元素相互构成的。
Not only did we figure out a way to describe how we quantify it, but we've also quantified how we tell the difference between covalent and ionic, and percent ionic character.
我们不仅想出了一个办法来描述,我们如何定量它,而且我们也定义,我们如何分辨共价性和离子性,以及离子百分数。
The Born-Haber cycle was designed to allow us to calculate the energetics of, in particular,the ionic bond.
伯恩哈勃循环,可以让我们计算能量,特别是离子键的。
Aluminum and magnesium are both made by ionic liquid electrolysis, just as I showed you last day.
铝和镁都是,由离子液体电解而成,就像我昨天讲的。
So, somewhere in between, the bonds are, we have a range of bonds between ionic on the one hand, and perfectly covalent on the other hand.
因此在中间,这些键,一方面是离子性,另一方面是完美的共价键。
And, he came up with a relationship to calculate the percent ionic character.
他想到一个办法,来计算每个离子化成分。
He said this is partial ionic character.
鲍林说这带有部分离子特性。
Now, last day, we looked at the energetics of the ionic bond, right?
昨天,我们讲的是离子键的热力学,对么?
We started with this hypothesis of octet stability and I'm talking about properties of ionic crystals.
我们从八隅律的稳定性假设开始,我们讨论到了离子晶体的性质。
So you can see that polar covalency is a tendency towards ionic bonding.
所以你看得出极性共价就是,趋向离子键的。
And, instead of being an electronic conductor, a liquid metal, it is an ionic conductor.
而不是电子导体,液态金属是离子导体。
Whereas, ceramics, ionic crystals will resist until they shatter.
但是,陶瓷,离子晶体就会抵抗外力,只到它们破碎。
Well, on the one hand, we have ionic bonding where we have complete sharing.
好吧,一方面,离子键有完全的贡献。
This is the ultimate in unequal sharing and this is ionic.
这是非平均共价,的最终形式离子键。
Point number two is that ionic solids at high temperatures make ionic liquids.
第二点是离子固体,在高温下会变成离子液体。
And now I have to convert atomic chlorine into ionic chlorine.
下一步我将氯原子,转化为氯离子。
So this is the energy of a single ionic bond.
这就是单离子键的能量。
And everybody would agree that is an ionic compound.
所有人都会同意,它是一个离子化物这一观点。
And there are two different scales of ionic character.
这里有两个版本的离子百分数。
So, one such ionic liquid is magnesium chloride.
一种离子液体就是氯化镁。
And that is why Pauling called this partial ionic character.
这就是鲍林,称他为带有部分离子特性的原因。
So, those are the ones that most likely form ionic bonds.
因此,这些几乎都是离子键。
This is ionic radii with a noble gas configuration.
这是稀有气体的离子半径。
And, what we will do next day is we will look at the consequences of such an energetic set up, and rationalize that when ions form, by necessity we must form ionic crystals.
明天我们要做的是,观察一下,这样一个充满活力的创造的结果,然后合理地解释要想得到离子,我们必须先得到离子晶体。
Where do we find these ionic crystals?
我们如何得到离子晶体?
And so we got to ionic bonding.
因此我们得到了离子键。
I formed a bond, an ionic bond.
生成了一根键,离子键。
Ionic solids form ionic liquids.
离子固体形成离子液体。
They melt to form ionic liquids.
它们熔化去形成离子液体。
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