Humans need Nitrogen? Edit

That is news to me. All we really need nitrogen for to to ensure that poisioness gasses like CO are not present and to reduce the concentration of oxygen. (Pure Oxygen, as the crew of Apollo 1 found out, can be a fire hazard.)

Deep sea divers commonly completely replace the nitrogen found in air with Helium. Will 02:52, 21 August 2006 (UTC)

molecule? Edit

Is nitrogen in atomar or molecular state? I think that nitrogen is usually in molecular state because of three valent electrons (read my name and you'll see that i know more about chemistry than you, hehe). Methyl Orange ^{(contact me)} 12:23, 29 January 2008 (UTC)