So, hopefully, you remember what we mean by valence electrons versus core electrons.

希望大家还记得，价电子与芯电子的定义。

youdao

And I want to point out the difference between core electrons and valence electrons here.

我想指出的是，核电子和价电子，之间的区别。

youdao

And I want to point out the difference between core electrons and valence electrons here.

我想指出的是，核电子和价电子，之间的区别。

youdao