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What is halogens?why are they called very active non metals?
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What is halogens?why are they called very active non metals?

User MG Han
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Any of the elements occupying group 17 on the periodic table. They form highly acidic compounds with hydrogen.


The elements are:
Fluorine (F)
Chlorine (Cl)
Bromine (Br)
Iodine (I)
Astatine (At)
User Yeile
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