See also:
Sites:
- ChemGlobe: Neptunium
- Electronic, thermal, and steric data along with an isotope table.
- ChemicalElements.com: Neptunium
- Basic information, atomic structure, and isotopes table.
- Encyclopedia Britannica: Neptunium
- Overview, discovery, structure and properties.
- EnvironmentalChemistry.com: Neptunium
- Atomic structure, chemical and physical properties, and table of nuclides.
- It's Elemental: Neptunium
- Basic physical and historical information.
- LANL: Neptunium
- Basic information and history.
- Lenntech: Neptunium
- Physical data, chemical properties, health and environmental effects.
- Visual Elements: Neptunium
- General and physical information, source, and key isotopes.
- WebElements: Neptunium
- Extensive information on history, uses, compounds, and properties.
- Wikipedia: Neptunium
- Notable characteristics, history, occurrence, isotopes, and weapons applications.
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Last update: 7:58 PT, Wednesday, January 13, 2010
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