modern periodic table and explain the gradation in reactivity of hapogen family
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- Explanation:
halogens are 17 groups and they are a mixture of salt with a metal.
Reactivity series
the most reactive halogen displaces all of the other halogens from solutions of their salts and is itself displaced by none of the others. the least reactive halogen displaces none of the others and is itself displaced by all of the others.
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