现有四种元素的基态原子的电子排布式如下:① 1s22s22p63s23p4; ②1s2

现有四种元素的基态原子的电子排布式如下: 1s22s22p63s23p4 1s22s22p63s23p31s22s22p5。则下列有关比较中正确的是                      

A.第一电离能:     B.原子半径:

C.电负性:         D.最高正化合价:

答案

A

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