F, Fluorit, kazivec, Freon, Zubní pasty, Cl, Halit, sůl kamenná, Bělení, Výroba plastů, Dráždí, leptá sliznice, Br, Toxická, červenohnědá kapalina, Tlumí činnost CNS, I, Hormon štítné žlázy, Výroba dezinfekcí

halogeny

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