NITROGEN

The nitrogen is a chemical element of atomic number 7, symbol N. The nitrogen (of the Latin nitrum-i and this one of the Greek νίτρον "saltpeter", and-geno, of the Greek γεν--, "to "generate") thinks that it was discovered formally by Daniel Rutherford in 1772 on having announced some of his properties.
The nitrogen is a gas so inert that Lavoisier was referring to him as scourge (nitrogen) that it means without life. It qualified between the permanent gases, especially since Faraday it was not managing to see liquid to 50 atm and-110 °C, up to the experiments of Pictet and Cailletet that in 1877 managed to liquefy it. The compounds of nitrogen already were known in the Middle Ages; this way, the alchemists were calling aqua fortis to the nitric acid and aqua royal (royal water) to the mixture of nitric and hydrochloric acid, known by his aptitude to dissolve the gold.
Information obtained of www.wikipedia.org