Sodium , calcium,alluminium , copper and magnesium arrange these elements in the decreasing order of their reactivity
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Sodium>Calcium>Magnesium>aluminium>copper
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In order of decreasing reactivity, the metals potassium, sodium, lithium, calcium, magnesium, zinc, iron and copper can be put in order of their reactivity from their reactions with water and dilute acids. ... You should also note that a more reactive metal will displace a less reactive metal from one of its compounds.
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