题干

下列各微粒中,核外电子总数相等的是(   )

A:CO2 和 NO2

B:H2S 和 H2O

C:NH4+ 和 H2O

D:N2 和 C2H4

上一题 下一题 0.0难度 选择题 更新时间:2019-08-08 10:01:23

答案(点此获取答案解析)

C

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