Observe the modarn periodic tablle &expllaingradation in reactivityfo halogen familly
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The halogen are very reactive as for them it is very easy to gain 1 electron to gain complete outermost shell as their valency is -1
halogens are fluorine, chlorine, bromine, iodine, astatine
....hope it helps
halogens are fluorine, chlorine, bromine, iodine, astatine
....hope it helps
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