and when did he discover it?
1772
Nitrogen
1772. 
earth is what number planet from the sun Third how many planets does this system of sun consists of? Nine what is the history behind the formation of the system? The Solar System formed 4.568 billion years ago from the gravitational collapse of a region within a large molecular cloud. which among the nine planets is the hottest? Venus what are its physical characteristics? It has a thick silicate mantle around an iron core, a substantial atmosphere, and evidence of internal geological activity. It is much drier than Earth, and its atmosphere is ninety times as dense. how long it takes to complete one revolution around the sun? Venus orbits the Sun at an average distance of about , and completes an orbit every 224.7 days. does the planet have any cultural aspect? In Sumerian religion, Inanna was associated with the planet Venus. It has importance in mythology, astrology and fiction which among the nine planet is "dwarf planet"? Pluto what do you mean by the above quoted term? A dwarf planet is a planetary-mass object that does not dominate its region of space and is not a satellite. how many natural satellites does the above mentioned planet have? Pluto has five known natural satellites. can you name some of them? Charon, Styx, Nix, Kerberos, and Hydra. how is the atmosphere in this dwarf planet? Pluto has a tenuous atmosphere consisting of nitrogen, methane, and carbon monoxide, which are in equilibrium with their ices on Pluto's surface. who discovered  the first element mentioned in the list? Daniel Rutherford
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Nitrogen [SEP] Introduction
Nitrogen is the chemical element with the symbol N and atomic number 7. It was first discovered and isolated by Scottish physician Daniel Rutherford in 1772. Although Carl Wilhelm Scheele and Henry Cavendish had independently done so at about the same time, Rutherford is generally accorded the credit because his work was published first. The name "nitrogène" was suggested by French chemist Jean-Antoine-Claude Chaptal in 1790 when it was found that nitrogen was present in nitric acid and nitrates. Antoine Lavoisier suggested instead the name "azote", from the Greek ἀζωτικός "no life", as it is an asphyxiant gas; this name is instead used in many languages, such as French, Italian, Russian, Romanian and Turkish, and appears in the English names of some nitrogen compounds such as hydrazine, azides and azo compounds.