What do you understand by reactivity series of metals
Answers
Reactivity series tell us that a metal is how much reactive
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It's not a simple question with a direct answer. Reactivity is not some thing like a well defined formula. In a strict sense when we say that metals are electropositive (tendency to loose electrons) , we can say that the more electropositive is the metal more reactive it is. Also a metal 'A' may react with a non metal 'P' more vigorously than metal 'B' reacts with 'P' - it doesnt mean that metal 'A' is more reactive than metal 'B'.
Similarly if we consider the standard electrode potentials lithium comes out to be at top followed by cesium,rubidium, potassium etc. But in real world reaction involving water , gases etc cesiumn, rubidium, potassium reacts more violently as compared to lithium. Although this peculiar behaviour of lithium is well defined on the basis of ions size and its hydration.
Inspite of that , the electrode potential table or the electropositiveness is usually taken as a reference for determining the reactivity .
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