1. By Steven Chrappa

2. Discovered by Sir William Ramsay, a Scottish chemist, and Lord Rayleigh, an English chemist in 1894 Was the first inverted gas to be discovered on earth One of the noble elements Comes from the Greek word for inactive, argos meaning inactive

3. Melting Point:83.80 K (-189.35°C or -308.83°F) Boiling Point:87.30 K (-185.85°C or -302.53°F) Density:0.0017837 grams per cubic centimeter Phase at Room Temperature: Gas Atomic Number:18 Atomic Weight:39.948 Element Classification: inverted gas Symbol: Ar

4. Argon is found by fractionating liquid air Earth’s atmosphere contains.94% argon

5.  Argon is used in electric lights and fluorescent tubes, photo tubes, glow tubes, and in lasers.  Argon is used as an inert gas for welding and cutting, blanketing reactive elements,  Protective (nonreactive) atmosphere for growing crystals of silicon and germanium.

6. Electron Dot Diagram Electron Configuration 1s² 2s² 2p 6 3s 2 3p 6

8. Bibliography Works Cited "Argon." Periodic. 15 Dec. 2003. US Department of Energy. 28 Nov. 2008. "Argon: the essentials." Web Elements. 29 Dec. 2007. 28 Nov. 2008. Gagnon, Steve. "It's Elemental Argon!" Jeffereson Lab. 29 Sept. 2008. 29 Nov. 2008.