Halogen Family: The elements Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I) and Astatine (At) constitute the group 17 of the long form of the periodic table. Most of these elements are found in seawater in the form of their compounds, so these are collectively referred to as Halogens meaning “Sea Salt Producers”. The last member of the family, Astatine is radioactive in nature with a very short half-life period and, hence, is quite rare in occurrence. General Trends in Physical Properties of Halogen Family: (i) Electronic Configuration- The general outer electronic configuration of the members of the halogen family is ns2 … Continue reading Group 17 Elements (Halogen Family)