P6+-+Halogen

Halogen is one of the highly reactive elements located in group 17 of the periodic table. The halogen group is made up of solids liquids, and gases, and is in group 17. The halogens include...
Henri Moissan discovered Halogen in 1866. Halogen can easily be combined with other elements. __Physical Properties:__
 * Flourine~gas
 * Chlorine~gas [[image:halogen.jpg width="161" height="167" align="right"]]
 * bromine~liquid
 * iodine~solid
 * astatatine~solid
 * Most of the elements in Halogen have a low melting point.
 * It's a yellow-greenish gas.
 * Do not conduct electricity.

Chemical Properties
 * The **most** reactive element on The Table of Periodic Elements.

[[image:halogens.jpg width="351" height="317" align="right"]]
Common Uses: Interesting Facts:
 * They all have seven valence electrons- seven electrons in their outer shell.
 * They react with metal to form compounds called halides.
 * Halogen light bulbs
 * Heating devices (heaters).
 * Most reactive element on the Periodic Table of Elements.
 * Used in anibiotics to prevent viruses.
 * Prevents tooth decay. [[image:file/view/halogen.jpg width="146" height="127" align="right"]]

Sources:
[|__http://www.artestuff.com/index.php?cPath=2_207__]
 * 1) "What are the common properties of halogen//?" Answers.//com. Nasdaq Capital Market, 31 Dec. 2008. Web. 26 Uct. 2009
 * 2) Ham, Becky. //The Periodic Table.// New York, NY: Infobase,2008. Print
 * 3) Thomas, Jerns. //Noble Gases.// Tarrytown, New York: Marshall Cavendish Corporation, 2003. Print.
 * 4) Habib. "Picture Heatingt and Lighting: Halogen Lamps." __Artestuffcom__ DRDA Business Centre, 26 Oct. 2009. Web. 2009<You will find images of halogen if you click here:

By: Haley Johnson, Aisha Bawani, and Brynn Rapp per:6