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Science: Chemistry: Elements: Neptunium:
See also:
- ChemGlobe: Neptunium - Electronic, thermal, and steric data along with an isotope table..
- ChemicalElements.com: Neptunium - Basic information, atomic structure, and isotopes table..
- 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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