题目内容

(12分)
(1)写出下列微粒的电子式:
CO2                          , H2O2                          
Na2O2                                     ,NH4+                          
(2)用电子式表示下列物质的形成过程:
H2                                                           
CaF2                                                          

(1)
(2)

解析

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