题目内容
下列用电子式表示形成过程正确的是 ( )。
A.H∶H+··············―→2H········ |
B. |
C. |
D. |
D
A项中应为H×+·······―→H×·······;B项中Br-应加[ ]-,Na应为Na+;C项中MgF应为[······×·]-Mg2+[×·······]-。
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题目内容
A.H∶H+··············―→2H········ |
B. |
C. |
D. |