Is chlorine used for disinfection

Add halogen lamps to the list, and the answer becomes more clear: All involve one or more of the halogens, which form Group 7 of the periodic table, which ... The five halogens are non-metallic elements which are found in group 17 on the periodic table. Halogen actually means salt former. Halogens are the group 7A elements in the periodic table. They are highly reactive nonmetals and exist as diatomic molecules. Apr 14, 2021 ... Halogens are non-metals and exist as diatomic covalent molecules. Their melting and boiling points are low and increases down the Group. The halogens are five non-metallic elements found in group 17 of the periodic table. The term "halogen" means "salt-former" and compounds containing halogens ... ... halogens according to their position in the periodic table belong to Group VIIA, which means they have seven valence electrons and need an additional ... A halogen is a chemical element from Group 17 (in the IUPAC convention) (formerly VII, VIIA) of the periodic table, composed of fluorine, chlorine, bromine, ... Page 1. 1. H. Hydrogen. 1.008. 11. Na. Sodium. 22.989. 19. K. Potassium. 39.098. 37. Rb. Rubidium. 85.468. 55. Cs. Cesium. 132.905. 87. Fr. Francium. Halogen - A halogen is an element found in Group 7 of the periodic table. Group - A group is a column on the periodic table that corresponds to the number ... A family of nonmetallic, generally electronegative, elements that form group 17 (formerly group VIIa) of the periodic table.