HBr They form HBr which is a gas at room temperature and one bar, right.

和常压下是液体，它们生成了,在室温和1巴下是气体。

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And I am saying suppose these form, as they have to initially, in the gas phase.

我想说假设这些形式，就和它们气相中的一样。

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Let's just take hydrogen and nitrogen in the gas phase and form ammonia.

我们利用氢气和氮气,合成氨。

麻省理工公开课 - 热力学与动力学课程节选

So, no matter whether or not you write out the full form here, or the noble gas configuration where you write ne first or whatever the 3s1 corresponding noble gas is to the core electrons, we always write out the valence electrons here.

所以无论你是否,写出了完整形式，或者对应于价电子的惰性气体,再一次,我们可以写Ne然后，我们总是可以在这里写出价电子。

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