Presentation on theme: "Halogens AKA “Salt-Formers” Group 17"— Presentation transcript:
1 Halogens AKA “Salt-Formers” Group 17 Nicole Tomasso, Karen Ruano, and Amy Miller
2 What are the Elements found in the Halogen Family? Fluorine-F: Found in toothpaste; prevents tooth decayChlorine-Cl: Disinfects pool water and drinking waterBromine-Br: Used to manufacture fire-retardants and pesticides; also used in photographic filmIodine-I: Makes tincture of Iodine, a common household antiseptic used to treat cuts and scratchesAstatine-At: Radioactive; all isotopes are radioactive; extremely rareElectron Configuration Formula- np5
5 States of MatterFluorine- Corrosive, pale yellow gas. Reactive with all elements.Chlorine- Green yellow gas.Bromine- Dark red brown liquid. Readily forms a red brown vapor.Iodine- Dark gray solid. Readily forms a violet vapor.Astatine- Radioactive solid. Only occurs as the result of other decaying elements.
6 Metals, Non Metals, or Metalloids? The Halogen elements are all non-metallicelementsNon metallic means that there is no metalin there chemical makeup
7 General Physical Properties Fluorine and Chlorine are both gasesBromine is a liquidIodine and Astatine are the only solid and their textures are brittle.There melting points are varied:F: °CCl: °CBr: -7.2 °CI: °CAt: 302 °CThey are not good conductors because they are all non-metals. They are not lustrous or malleable.Astatine is the only radioactive element in the Halogen family.
8 General Chemical Properties They are highly reactive they are missing one valence electron and like to bond with almost any element so they can receive that missing electron.Fluorine= one of the most reactive elements in existence. Fluorine is also reactive in small amounts of water.They usually react with elements with one valence electron.
9 Extra InformationFluorine is mined as fluorspar, calcium fluoride and cryolite. Chlorine is also found in minerals such as rock-salt, and huge quantities of chloride ions occur in seawater, inland lakes and subterranean brine wells. It is obtained by the electrolysis of molten sodium chloride. Bromine is also found as the bromide ion in seawater, and in brine wells, from which it is extracted. Iodine is mined as sodium iodate which is present in Chile saltpetre. It is obtained by reaction with sodium hydrogensulfite. Astatine only occurs after the decomposition of other elements.
11 Interesting FactsThe halogen family is the only family in the periodictable that has elements in all three states of matter atroom temperature.Halogens are one of the most electronegative elements in the periodic table.Chlorine gas, also known as mustard gas, was used during World War I was the start of chemical warfare.