Nitrogen+7


 * = Nitrogen was found by a Scottish physician named Daniel Rutherford in 1772. =
 * = It makes up about 78% of the earths atmosphere. =
 * = Nitrogen gas is largely inert and is used as a protective shield in the semiconductor industry and during certain types of welding and soldering operations. =

This information was found at http://education.jlab.org/itselemental/ele007.html.

 * = The element seemed so inert that Lavoisier named it azote, meaning "without life". =
 * = As a liquid it is also colorless and odorless. =