Argon

=Element Name= By: Aaliyah & Jasmin


 * Atomic Number:**  18


 * Protons: 18**


 * Neutrons: 22**


 * Average Atomic Mass: 39.5 amu**


 * Isotopes:** 35Ar 36Ar 37Ar 38Ar 39Ar 41Ar 42Ar 43Ar 44Ar


 * Discovery:** It was isolated by examination of the residue obtained by removing nitrogen, oxygen, carbon dioxide, and water from clean air. Argon was discovered by Lord Rayleigh and Sir William Ramsay in 1894. 
 * Name:** from the Greek word "//argos//" meaning "//inactive//"


 * Uses:**
 * used in electric light bulbs and in fluorescent tubes at a pressure of about 3 mm, photo tubes, glow tubes, etc.
 * used as an inert gas shield for arc welding and cutting
 * blanket for the production of titanium and other reactive elements
 * protective atmosphere for growing silicon and germanium crystals ,lasers, light bulbs electric light bulbs and fluorescent tubes, photo tubes, glow tubes, welding, cutting, as a protective gas for other substances


 * Interesting Facts**: What are some interesting facts you found out about your element?


 * Video:**  media type="youtube" key="nrHVOFG2V-c" height="344" width="425"

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 * Sources**
 * Photo: http://periodictable.com/Samples/018.7/s9s.JPG You'll need to check the box at the bottom of the page. Copy the image source from Flickr and place this picture in the upper right hand corner of this page using the photo tool (the one that looks like a palm tree). You need to place your copied URL in the "Insert External Image" by URL box. Also provide a link to the exact page on Flickr where the image lives. See Hydrogen for an example.
 * Video: http://www.youtube.com/watch?v=nrHVOFG2V-c&eurl=http://www.periodicvideos.com/videos/018.htm&feature=player_embedded
 * Http://wiki.answers.com/Q/how_many_protons_and_neutrons_does_argon_have
 * http://www.webelements.com/argon/uses.html