1. Why do all the metal pieces get polished before the experiment?B.22

1.	1. Why do all the metal pieces get polished before the experiment?B.22. Why can not each metal react to its own salt (Eg. Cu and Cuso,)?3. Arrange the non metals iodine, fluorine, bromine, chlorine in decreasing order of theireactivity?
Answer» 1)Metal prices are polished before the experiment because to remove the topmost layer of it as when the metal is burnt the metal oxide will prevent the metal piece from further oxidation.. 2)Sodium ion is already stable so it won't react while sodium atom is unstable and reactive and tends to lose one of its electrons. Sodium of table salt does not react with water like sodium metal BECAUSE it separates from chlorine as ionic sodium and ionic sodium is stable and it is solvated hence it does not react.

1. Why do all the metal pieces get polished before the experiment?B.22. Why can not each metal react to its own salt (Eg. Cu and Cuso,)?3. Arrange the non metals iodine, fluorine, bromine, chlorine in decreasing order of theireactivity?

Answer»

1)Metal prices are polished before the experiment because to remove the topmost layer of it as when the metal is burnt the metal oxide will prevent the metal piece from further oxidation..

2)Sodium ion is already stable so it won't react while sodium atom is unstable and reactive and tends to lose one of its electrons. Sodium of table salt does not react with water like sodium metal BECAUSE it separates from chlorine as ionic sodium and ionic sodium is stable and it is solvated hence it does not react.

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