-Argon-

Argon is the 18th element on the periodic table its symbol is Ar and the Atomic Number is 18 and the Atomic Mass is 39.9.
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Argon is located in group 18 and period 3

18 protons
22 nuetrons
18 electrons


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Isotopes of the element are:
36. Stable
37. 35.0 days
38. Stable
39. 269 years
40. Stable
41. 1.8 hours


Argon was discovered in Scotland by Lord Rayleigh and Sir William Ramsay in the year 1894.

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Scotland.PNG
Its the Red

Lord Rayleigh and Sir William Ramsay

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ArGON FREEZES AT -185.7 DEGREES CELCIUS AND BOILS AT -182.2 DEGREES CELCUIS It Is a gas.
Solid_and_liquid_argon_in_small_graduated_cylinder.jpg

Light bulbs
contain Argon
light_bulb.jpg Like this one
bulb4.jpg
Argon is odorless and colorless so if a light bulb breaks you cannot see or smell the Argon.
It also makes up .94% of earths atmosphere.


Bibliography
Works Cited
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" Google Image Result for http://media-2.web.britannica.com/eb-media/67/20967-004-66E3C8DB.jpg." Google Images. N.p., n.d. Web. 30 Nov. 2009. <http://images.google.com/imgres?imgurl=http:media-2.web.britannica.com/eb-media/67/20967-004-66E3C8DB.jpg&imgrefurl=http://www.britannica.com/EBchecked/topic-art/490808/13653/William-Ramsay&usg=olYiIWV_-DpEplYSOAQnwZaW7Yo=&h=450&w=359&sz=35&hl=en&star>.

" Google Image Result for http://upload.wikimedia.org/wikipedia/commons/8/8f/Scotland_Location_UK.PNG." Google Images. N.p., n.d. Web. 30 Nov. 2009. <http://images.google.com/imgres?imgurl=http:upload.wikimedia.org/wikipedia/commons/8/8f/Scotland_Location_UK.PNG&imgrefurl=http://commons.wikimedia.org/wiki/File:Scotland_Location_UK.PNG&usg=WUwVvRpcrp-qrcwBbdOEO8-7adU=&h=430&w=578&sz=70&hl=en&start=1>.
" Google Image Result for http://www.bbc.co.uk/schools/gcsebitesize/science/images/38_modern_periodic_table.jpg." Google Images. N.p., n.d. Web. 30 Nov. 2009. <http://images.google.com/imgres?imgurl=http:www.bbc.co.uk/schools/gcsebitesize/science/images/38_modern_periodic_table.jpg&imgrefurl=http://www.bbc.co.uk/schools/gcsebitesize/science/edexcel/patterns/periodictablerev_print.shtml&usg=c8hbQACyBLPLee2SC7>.
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" Google Image Result for http://www.world-guides.com/images/scotland/scotland_map1.jpg." Google Images. N.p., n.d. Web. 30 Nov. 2009. <http://images.google.com/imgres?imgurl=http:www.world-guides.com/images/scotland/scotland_map1.jpg&imgrefurl=http://www.scotland.world-guides.com/&usg=__Hr5cFBBpPQoWUSWlj5acECBV_s0=&h=573&w=450&sz=21&hl=en&start=19&um=1&itbs=1&tbnid=JKHiHwjWKvXlnM:&tbnh>.
None. Light Bulb. N.d. None, Unknown. Google Images. Web. 23 Nov. 2009.
Unknown. Light Bulb. N.d. None, Unknown. Google Images. Web. 23 Nov. 2009.
Unknown. Liquid Argon. 0. None, Unknown. . Web. 23 Nov. 2009.
"WebElements Periodic Table of the Elements | Argon | historical information." WebElements Periodic Table of the Elements. N.p., n.d. Web. 30 Nov. 2009. <http://www.webelements.com/argon/history.html>.
"WebElements Periodic Table of the Elements | Argon | historical information." WebElements Periodic Table of the Elements. N.p., n.d. Web. 30 Nov. 2009. <http://www.webelements.com/argon/history.html>.


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