The decreasing order of reactivity of metals Cu› Fe›Zn
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The decreasing order of reactivity of Zn, Mg, Al, Cu, Fe is Mg > Al > Zn > Fe > Cu. Reactivity series is K > Na > Ca > Mg > Al > Zn > Fe > Pb > H > Cu > Hg > Ag > Au. The Arrangement of metals in the decreasing order of their reactivities is called the activity series of metals.
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