Sodium is more reactive than iron. How can you prove it?

(i) Sodium reacts vigorously with cold water and a large amount of heat releases but iron reacts with steam very slowly.


(ii) Sodium metal reacts with ferric oxide (Fe2O3) and forms sodium oxide by displacing iron.


6Na + Fe2O3 3Na2O + 2Fe


(iii) Sodium reacts with acids very quickly but iron takes some time to react with acids.


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