Name Nitrogen
Symbol N
Atomic Number 7
Atomic Mass 14.007 atomic mass units
Number of Protons 7
Number of Neutrons 7
Number of Electrons 7
Melting Point -209.9 C
Boiling Point -195.8 C
Density 1.2506 grams per cubic centimeter
Normal Phase Gas
Family Nonmetal
Period 2
Cost 4 cents per 100 grams



Origin of Name From the Greek words nitron genes. meaning forming native soda.
Date and Place of Discovery In 1772 in Scotland
Discovered by Daniel Rutherford
Common Compounds
Interesting facts
  • Compounds of nitrogen were known in the middle ages.
  • It makes up about 78.1% of our atmosphere.
  • It is estimated to be the 7th most abundant chemical element in our universe.
  • Nitrogen is an essential part of amino and nucleic acids, which are necessary for life.
  • Nitrogen gas is created through the distillation of liquid or gaseous air.
  • Commercial nitrogen is a byproduct created in the steelmaking process.
  • It is less expensive than argon.
Common Uses
  • Preserves freshness in bulk foods
  • Incandescent light bulbs
  • Electronic parts (transistors, diodes, integrated circuits)
  • Protects liquid explosives during transportation
  • Military aircraft fuel systems
  • Tires for aircraft and automobiles


Photo Courtesy of Jefferson Labs
The Third Millennium Online
Web Elements

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