Periodic Table of the Elements: Nitrogen

Name: Nitrogen
Symbol: N
Atomic Number: 7
Atomic Mass: 14.0067
Atomic Volume: 13.70 cc/mol
Discovered By: First isolated by Rutherford in 1772
Discovery Date: 1772
Origin of Name: Nitrogen - (Greek) nitron (native soda), genes (forming)
Toxicity: Not toxic. Has narcotic action at high pressure (in mixture with oxygen). Dissolves in blood and tissues. Nitrogen leaving blood and tissues produces caisson disease.
Summary: Nitrogen gas (N ₂ ) makes up 78% of the atmosphere by volume.

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