当我们沿着列向下走的时候，会发现电离能是在降低的。

As we go down a column, what happens is that the ionization energy decreases.

youdao

当我们沿着列向下走的时候，会发现电离能是在降低的。

As we go down a column, what happens is that the ionization energy decreases.

youdao