Halogens uu chemical elements hae jon ki periodic table me second-to-right column jiske Group 7 ke naam se bhi jaana jaawe hae, me hae. Ii group ke elemets hae: fluorine, chlorine, bromine, iodine, astatine, aur ununseptium. Halogen ke matlab ""salt becomer"", nai to ""salt producer"" hae. Halogaens bahut reactive hae aur iske jaada kar ke duusra element se jurraa paawa jaae hae.