P2+-+Nitrogen

= = All About Nitrogen __Properties__ Nitrogen is part of Group 15 which ranges widely in Physical states. Nitrogen is most commonly found in the gas form. Physical- Nitrogen is colorless, crystal structure (hexagonal), and has a density of 1.2506g. It's melting point is -209.9 degrees Celsius. Chemical- Nitrogen is not flammable or combustible, It forms nitric oxide and nitrogen dioxide with oxygen, and it combines with lithium, magnesium, titanium, and other metals at high temperatures to form nitrides.

__Common Uses__ Most of the air we breathe is Nitrogen. Plants and People would die if Nitrogen was not in the air. Also, 3% of nitrogen is in the atmosphere of mars.

__Interesting Facts__ __Where is Nitrogen on the Periodic Table?__ Nitrogen is in the 2nd Period (corresponds to 2nd Row) and is in the 15th group.By: Dana Dubinski and Andrea Gattone __Works Cited__
 * Forms 78% of our atmosphere on Earth.
 * Discovered by Daniel Rutherford in 1772
 * Classified in non-metals

Bentor,Yinon. __ChemicalElement.com-Nitrogen.__ Oct. 20, 2009 

"Nitrogen Group Element." Encyclopedia Britannica. 2009. Encyclopedia Britannia Online. 20 Oct. 2009 

"Nitrogen Properties." Gas Plants Manufacturers. Oct. 26, 2009 <http://www.gas-plants.com/nitrogen-properties.html

P. Maier. "The Elements." Tomlinson Middle School. October 26, 2009 >>>>

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