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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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So we say aluminium, you know, the metal, the foil, they say aluminum.
所以我们说aluminium，一种金属，锡箔，他们说aluminum。
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It could be aluminum, silicone, phosphorous, sulfur, c hlorine or argon.
答案可能是铝，硅，磷，硫,氯或者氩。
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Because aluminum ions have charge of plus three and oxygen ions have charge of minus two.
因为铝离子为正三价,氧为负二价。
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So between b e, and b, between n and o, magnesium and aluminum, and then phosphorous and sulfur, what we see here is that we're kind of going down, or quite specifically, we are going down.
比如从铍到硼，从氮到氧，从镁到铝，从磷到硫，我们在这些地方看到有点下降，或者可以明确地说，我们确实在下降。
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So, it turns out that the majority of you got the correct answer, which is that it's aluminum.
从结果看大多数人,都做对了，答案应该是铝。
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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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That is why aluminum is so expensive because the oxide is so stable.
这就是为什么铝这么贵,因为氧化物稳定。
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What is this? You say it's an aluminum can.
为什么呢，例如这是个铝罐。
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We can go all the way down -- magnesium aluminum, all the way to this noble gas, 3s23p6 argon, which would be n e and then 3 s 2, 3 p 6.
我们可以继续，镁，铝,一直到惰性气体，氩它是Ne然后。
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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 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。
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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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He said look at sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, potassium.
他说，看，钠，镁，铝，硅，磷，硫磺，氯，钾。
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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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I could even make it out of steel versus aluminum.
甚至可以用刚合铝来做。
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Aluminum oxide, aluminum plus oxygen.
氧化铝，铝加上氧。
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600kJ/mol Aluminum oxide almost 1,600 kilojoules per mole.
氧化铝几乎是。
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For comparison, aluminum is 2.7.
相比而言，铝是2。
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Number two is aluminum.
第二种是铝。
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