Which of the following atoms has the largest second ionization energy?

分类: 作业答案 • 2021-12-31 13:24:03

问题描述：

Which of the following atoms has the largest second ionization energy?
(A) Si (B) Ca (C) CI (D) Fe (E) Na
答案是（E)

答

失去一个电子后已经达到稳定结构.再失去一个电子就很困难.