Nitrogen was discovered by Daniel Rutherford at 1772 in Scotland.
Origin of name: from the Greek words "nitron genes" meaning "nitre" and
"forming" and the Latin word "nitrum" (nitre is a common name for potassium nitrate, KNO#)
Atomic Number: 7
Atomic Weight: 14.0067
Melting Point: 63.15 K (-210.00°C or -346.00°F)
Boiling Point: 77.36 K (-195.79°C or -320.44°F)
Density: 0.0012506 grams per cubic centimeter
Phase at Room Temperature: Gas
Element Classification: Non-metal
Period Number: 2 Group Number: 15 Group Name: Pnictogen