挑战习题
1/5单选题
难度:

1.将金属锰(Mn)投入稀盐酸中,有气泡产生.将镁条插入硫酸锰溶液中,如果有锰析出,则Mn、Mg、Cu的金属活泼性由弱到强的顺序是
A Mn、Mg、Cu
B Cu、Mn、Mg
C Cu、Mg、Mn
D Mn、Cu、Mg
提示1:
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提示2:
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正确答案:Qg==
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