Klaus: We had a big hydrogen 3 hype some ten years ago.

克洛斯：大概十年前，有一阵子，氢能概念给炒作得很厉害。

youdao

Well, oxygen, we'll put a hydrogen here, 1 2 3 4 hydrogen here, and one, two, three, four.

如果把一个氢放在这边，另一个氢这边，然后。

麻省理工公开课 - 固态化学导论课程节选

So, I'm asking very specifically about radial nodes here, how many radial nodes does a hydrogen atom 3 d orbital have?

我问的是径向节点，这里3d轨道的径向节点有多少个？

麻省理工公开课 - 化学原理课程节选

And then this second term, if we go to the Periodic Table, 2 we will find that the value here for hydrogen is 2.2 98 and the value for fluorine is 3.98.

再算上第二个条件，翻看元素周期表，我们查处H，F电负性分别为2,2。2，3。

麻省理工公开课 - 固态化学导论课程节选

Nuclear plant operators are battling to prevent meltdowns at three reactors, and Chief Cabinet Secretary Yukio Edano warned Sunday that a hydrogen explosion could occur at Unit 3 of the Fukushima No.1 nuclear power station.

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It is an idea auto companies are looking at closely, but they say the material needs to store 2.5 times to 3.5 times more hydrogen than it does now before it can be seriously considered.

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With the failure of the electrical systems, hydrogen has not been venting, and appears to have resulted in the explosions at 3 buildings.

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