- ChemGlobe: Actinium - Electronic, thermal, and steric data along with an isotope table.
- ChemicalElements.com: Actinium - Basic information, atomic structure, and isotopes.
- EnvironmentalChemistry.com: Actinium - Atomic structure, properties, and table of nuclides.
- It's Elemental: Actinium - Basic physical and historical information.
- Lenntech: Actinium - Physical data, chemical properties, health and environmental effects.
- Visual Elements: Actinium - Image, sources, biological role, key isotopes, and oxidation states.
- WebElements: Actinium - Extensive information on history, uses, occurrence, compounds, and properties.
- Wikipedia: Actinium - Details the properties of the element, including its history, applications, and characteristics.
Last update: Apr 28, 2012 18:35:10. Phy.org is a private web site, powered by the Open Directory Project.
