Nitrogen

See also:

ChemGlobe: Nitrogen - Electronic, thermal, and steric data along with basic facts and an isotope table.
ChemicalElements.com: Nitrogen - Basic information, atomic structure, and table of isotopes.
EnvironmentalChemistry.com: Nitrogen - Atomic structure, chemical and physical properties, and table of nuclides.
Especiál Gas Inc.: Nitrogen - Numeric data, uses, and general information.
It's Elemental: Nitrogen - Basic physical and historical information.
LANL: Nitrogen - History, sources, natural compounds, and ammonia.
Lenntech: Nitrogen - Physical data, chemical properties, health and environmental effects.
USGS Minerals Information: Nitrogen - Statistics and information on the worldwide supply, demand, and flow of the element (PDF format).
Visual Elements: Nitrogen - Animation, uses, physical information, and key isotopes.
WebElements: Nitrogen - Extensive information on history, uses, occurrence, compounds, and properties of the element.
Wikipedia: Nitrogen - Properties of the element, including its history, applications, and characteristics.