Neptunium

• Science: Chemistry: Elements: Actinides  (1)

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.