下列物质中,只有氧化性、只有还原性,既有氧化性又有还原性的顺

下列物质中,只有氧化性、只有还原性,既有氧化性又有还原性的顺序排列的一组是(    )

A.F2、K、HCl   B.Cl2、Al、H2   C.NO2、Na、Br2  D.O2、SO2、H2O

答案

A   


解析:

元素具有最高价时只有氧化性,注意F2没有最高化合价,元素具有最低化合价时只有还原性,而处于中间价态时既具有氧化性又具有还原性。

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