- Visual Elements: Nitrogen - http://www.chemsoc.org/viselements/pages/nitrogen.html
- Animation, uses, physical information, and key isotopes.
- It's Elemental: Nitrogen - http://education.jlab.org/itselemental/ele007.html
- Basic physical and historical information.
- ChemicalElements.com: Nitrogen - http://www.chemicalelements.com/elements/n.html
- Basic information, atomic structure, and table of isotopes.
- EspeciƔl Gas Inc.: Nitrogen - http://www.c-f-c.com/specgas_products/nitrogen.htm
- Numeric data, uses, and general information.
- USGS Minerals Information: Nitrogen - http://minerals.usgs.gov/minerals/pubs/commodity/nitrogen/
- Statistics and information on the worldwide supply, demand, and flow of the element (PDF format).
- EnvironmentalChemistry.com: Nitrogen - http://environmentalchemistry.com/yogi/periodic/n.html
- Atomic structure, chemical and physical properties, and table of nuclides.
- Lenntech: Nitrogen - http://www.lenntech.com/periodic-chart-elements/n-en.htm
- Physical data, chemical properties, health and environmental effects.
- Wikipedia: Nitrogen - http://en.wikipedia.org/wiki/nitrogen
- Properties of the element, including its history, applications, and characteristics.
- LANL: Nitrogen - http://periodic.lanl.gov/elements/7.html
- History, sources, natural compounds, and ammonia.
- ChemGlobe: Nitrogen - http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/7.html
- Electronic, thermal, and steric data along with basic facts and an isotope table.
- WebElements: Nitrogen - http://www.webelements.com/webelements/elements/text/n/key.html
- Extensive information on history, uses, occurrence, compounds, and properties of the element.
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