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Nitrogen is mostly known as odorless and has no color. Nitrogen is responsible for the orange-red, blue-green, blue-violet, and deep violet colors of the aurora.NItrogen is not metal it is a gas.Nitrogen has the atomic mass of 14 and the atomic number is 7.Nitrogen has 7 protons,7 electrons,7 neutrons.In the first orbit nitrogen has 2 electrons and the second orbit it has about 5 electrons. We breathe in nitrogen and the comprises is that it is 78.1% with the Earth's air.Here is a video about nitrogen When you put an organic substance it will freeze the organic substance and the organic substance will feel a little bit of pain http://www.youtube.com/watch?v=zmvJ54kRpjg. An english physician named John Mayow had discovered that air is not a single element.Daniel Rutherford is a scottish scientist who had discovered and isolated Nitrogen.One of Rutherfords professors,a scottish chemists Joseph Black had been doing a research on carbon dioxide.Black had discovered that the resulting the atmosphere could not be breathed.Their were two people that had first discovered gas first was an chemist named Belgian,a physician named Janbaptist Van Helmont.Last one was a chemist named Jean-Antoine Chaptal had named the N to Nitrogen. NItrogen is the seventh most abundant element in the universe.Nitrogen is found in many things like foods,explosive,poison,but the mostly one that nitrogen is found in is fertilizer.We use nitrogen for many reasons.Liquid is used by the oil industry to buil up pressure in walls to force crude oil upward.Nitrogen is also used in grocery stores to freeze the food.Nitrogen is also used for explosions.