我们需要8加4等于4,12个电子来填满壳层。

We need 8 plus 4 is 12 for full shells.

youdao

因此，为了填满所有的壳层，我们需要三乘以八也就是二十四个电子。

So, in order to fill up our shell, what we need is 3 times 8 or 24 electrons.

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

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

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。

麻省理工公开课 - 化学原理课程节选

So, in order to fill up our shell, what we need is 3 times 8 or 24 electrons.

因此，为了填满所有的壳层，我们需要三乘以八也就是二十四个电子。

麻省理工公开课 - 化学原理课程节选

So to figure out bonding electrons, -- what we take is that number 18, which is our total number of electrons we need to fill valence shells, and we subtract it from our number of valence electrons, which is 10.

那么为了找出成键电子，我们将十八，也就是填满所有价壳层,所需要电子的总个数，减去我们所有的价电子的个数，也就是十。

麻省理工公开课 - 化学原理课程节选