which of the following species is expected to have the largest number of unpaired electrons?

题目

which of the following species is expected to have the largest number of unpaired electrons?
CO F2 B2.
需要用到molecular Orbital theory

答案

molecular Orbital theory 不要用啊
这末简单只要经典价键理论就可以了
很好做,（价电子-成键电子）=未成键电子对数
注意这是经典价键的时候