This includes atomic radius and the idea of isoelectronic atoms.

包括原子半径，以及等电子原子的概念。

youdao

So we haven't gotten to molecules yet, we're just talking about single atoms or single ions, but what's nice is just talking about this very straightforward principle of atomic radius.

我们还没有开始讲分子，我们仍然只是在讨论单个原子或离子，但它的好处在于可以讨论，这个关于原子半径的非常简单直接的原理。

youdao

So we haven't gotten to molecules yet, we're just talking about single atoms or single ions, but what's nice is just talking about this very straightforward principle of atomic radius.

我们还没有开始讲分子，我们仍然只是在讨论单个原子或离子，但它的好处在于可以讨论，这个关于原子半径的非常简单直接的原理。

youdao