而对于氟来说，氟原子更小,与外部壳层在这的负一价氟离子相比。

Whereas for fluorine, fluorine is smaller than f minus is the one that's the outer shell shown here.

youdao

因此要填满我们的“八隅体“,排满所有的价壳层，我们总共需要十八个电子。

So in terms of total numbers that we would need to complete our octets and fill our valence shells, we would need 18 electrons.

youdao

原因是因为我们的氢，已经有一个排满的价壳层了，它不再需要多余的电子了。 ！

Thee reason is because we already have a full valence shell for our hydrogen, it doesn't want any more electrons.

youdao