Top: Science: Chemistry: Elements: Actinium:

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See also:

• Science: Chemistry: Elements: Actinides  (2)

This category in other languages:
	Portuguese  (1)

• 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.
• LANL: Actinum - Basic information and history.
• 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.

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