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He says not only does arsenic belong under phosphorus, I predict that there is an element that lies below aluminum and above indium.
他认为不仅砷属于在磷下面，我预言还有一个元素,是在铝之上和铟的下边的。
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He knows that he shouldn't put arsenic under - He shouldn't put arsenic under aluminum.
他知道他不能将砷放到,他不能把砷放到铝的下面。
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The reason it's aluminum is because aluminum has a lower z effective, so it's not being pulled in as tightly by the nucleus, and if it's not being pulled in as tightly, you're going to have to put in less energy in order to ionize it, so that's why it's actually going to have the smaller ionization energy.
原因是,铝的有效核电量更少，所以没有被原子核束缚得更紧，而如果没有被束缚得更紧，你为了电离它所需要注入的能量也就更少，这就是,它的电离能会更低的原因。
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Aluminum is 25 million tons per year for the whole planet.
铝的产量为每年2500万吨,全世界。
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And so not only is aluminum highly charged, but it is physically small.
所以并非铝高度带电，但是它的物理半径很小。
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Alumina is really stable, which is why it takes so much energy to make aluminum.
矾土相当稳定，这就是为什么需要消耗大量的能量制备铝了。
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So, aluminum is about 50% denser than magnesium.
所以铝的密度比镁大一倍。
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