sodium, magnesium, copper is given to you. write 2 activities for separation of metals in decreasing order
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Magnesium reacts slowly with cold water but rapidly with hot, boiling water, whereas copper does not react even with steam. This activity also shows that here sodium is the most reactive metal and copper is the least reactive metal. So, the order of their decreasing reactivity is : Sodium > Magnesium > Copper.
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