Question

What is meant by reactivity series of metals?

Answer 1

in reactivity series of metal the metal are arranged in the decreasing order the order is potassium sodium calcium magnesium aluminium zinc iron tin lead hydrogen copper mercury silver gold platinum
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Answer 2

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The activity series (also known as reactivity series) of metals is a series in which metals arranged in the decreasing order of reactivity. Thus the most reactive metal is placed at the top of the series while the least reactive metal is placed at the bottom of the series. 

This series is prepared by performing displacement reactions between various metals and their salt solutions. The reactivity series is given as follows: