某溶液中只含有Na+、Al3+、Cl-、SO42- 四种离子,已知前三种离子的

某溶液中只含有Na+、Al3+、Cl、SO42 四种离子,已知前三种离子的个数比为3:2:1,则溶液中Al3+和 SO42的离子个数比为

A.1:2         B.1:4          C.3:4         D.3:2

 

答案

A

解析:略

 

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