on the basis of their chemical activities metal are arranged call reactivity series/ order zinc metal when placed in iron sulphate solution (green in colour) turns it colourless also when iron is placed in copper sulphate solution (blue in colour) the solution turns screen arrange these three metals iron, copper and zinc the order of their reactivities
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ACTIVITY SERIES OF METAL IS A SERIES IN WHICH METALS ARE ARRANGED ACCORDING TO THEIR REACTION.