硬铝的组成金属有铝、镁、铜、锰等。已知:锰丝放入稀硫酸中,有

硬铝的组成金属有铝、镁、铜、锰等。已知:锰丝放入稀硫酸中,有气泡产生;锰丝放入硫酸铝溶液中,表面没有金属析出。下列有关金属的活动性强弱判断错误的是21·cn·jy·com

AMn > Cu                           BAl > Mn

CMg > Al                           DMn > Mg

答案

D

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