The Halogen Family By: Spencer Bacon and Katie Hobika The Halogen Elements Fluorine 9 protons 9 electrons Chorine 17 protons 17 electrons 19 neutrons Bromine 35 protons 35 electrons 45 neutrons Iodine 53 protons 53 electrons 74 neutrons Astatine 85 protons 85 electrons 125 neutrons 10 neutrons What is in common with atoms of the halogens? z Seven valence electrons Are the Halogens Reactive? Yes z Seven valence electrons not eight z Need eight valence electrons to not be reactive z Liquid, solid and gas phases Gas Liquid Solid zFluorine zBromine zIodine zChlorine zAstatine The Details in the Halogen Elements Fluorine Yellow, kind of green, foggy Chlorine Greenish, a bit of yellow, hazy Bromine reddish and liquidly Iodine Black, hard Astatine Metallic, hard Uses of Halogen Elements Fluorine Chlorine Added in city water in about one part per million to help prevent tooth decay Used to bleach, and purify water Bromine poison Iodine It is required in humans Astatine Uses not known Characterization The Halogen family is made of all nonmetals Fun Facts!! z Halogens have their own name for reacting with other atoms-a halide! Bibliography Gagnon, Steve. Fluorine. 17 Dec. 2008 <http://education.jlab.org/itselemental/ele009.html>. Bromine Uses. 17 Dec. 2008 <http://www.fairfield.k12.ct.us/tomlinson/element/bromine_uses.htm>. Uses Of Iodine. 17 Dec. 2008 <http://www.pleasantridge.k12.ca.us/magnolia/elements/iodine/iodine2.html>. Astatine. Dec. 17 2008 <http://www.tamuk.edu/chemistry/WebElements/astatine_element.htm>. Web Elements. Dec. 17 2008 <http://webelements.com/>.