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And that is that the lattice energy as is depicted by the Madelung constant is dominant.
如晶格能中的马德隆常数,就十分重要。
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And, we knew that if we know the crystal structure we can get the Madelung constant, not a problem.
我们都知道只要有了晶体结构,就能知道马德隆常数。
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But look at the lattice energy, the Madelung energy component is huge which tells you that when ions form they really want to continue to glom onto one another and form that giant crystal.
看看晶格能，马德龙能很大,这告诉我们，当形成离子是,它们如果要继续的话,需要从另外一方夺取电子，形成巨大的晶体。
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And I am going to call this whole geometric factor here, I am going to put it into one number, and I am going to denote that the Madelung constant.
接下来我将会称这一部分为几何因子，我将把它们整合在一个数字里，我将会标注它为马德隆常数。
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If you go to the Madelung calculation, it is basically this one over here.
如果你计算马德龙常数，主要基于这个。
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And, the Madelung constant, what does it represent?
马德隆常数，代表的什么吗？
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The Madelung constant is simply the geometric factor.
马德隆常数也就是几何因子。
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And we wrote something that looks, the energy is equal to minus the Madelung constant times Avogadro's number, 0R0 q1 q2 over 4 pi epsilon zero R zero.
我们写下了，晶格能等于负的马德隆常数,乘以阿伏伽德罗常数，乘以q1q2除以4πε
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