下列基态原子或离子的电子排布式错误的是    A.  K  1s22s22p63s23p64s

下列基态原子或离子的电子排布式错误的是   

A.  K  1s22s22p63s23p64s1    B.  F- 1s22s22p5

C.  Mg2+ 1s22s22p6           D.  Br 1s22s22p63s23p63d104s24p5

答案

B

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