Gourt > Science > Chemistry > Elements > Actinium
Actinium is a chemical element in the periodic table that has the symbol Ac and atomic number 89.
Notable characteristics
Actinium is a silvery radioactive metallic element. Due to its intense radioactivity, Actinium glows in the dark with an eerie blue light. It is found only in traces in uranium ores as 227Ac, an α and β emitter with a half-life of 21.773 years. One ton of uranium ore contains about a tenth of a gram of actinium.
Applications
It is about 150 times as radioactive as radium, making it valuable as a neutron source. Otherwise it has no significant industrial applications. More on [ Actinium ]
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santarh (ãµã³ã¿P) Thu, 07 Jan 2010 15:24:24 -0000
@actinium89 こんばんは、みさくら唯人さん
@actinium89 ã·ã§ã¿ã¨801ã¯ãã¡ã ãªãã§ããã°ããªãããã§ã
midukaze (ã¿ã¥ãã) Thu, 07 Jan 2010 15:16:47 -0000
@actinium89 ショタと801はダメだな、できればロリがいいです
@actinium89ãã·ã¼ã¡ã¤ã«ããä½è£ã§ã＾＾
penguinyarou (pennguinyarou) Thu, 07 Jan 2010 15:09:24 -0000
@actinium89 シーメイルすら余裕です＾＾
@actinium89 ãªããã¤ã³ã¯ãã¼ã·ã§ã³ãããªããã»ã»ã»
midukaze (ã¿ã¥ãã) Thu, 07 Jan 2010 11:12:35 -0000
@actinium89 オロナインはローションじゃないぞ・・・
@actinium89 ã¾ã¨ããã¨ç女ã®ãã³ããè²·ã£ãã¡ã¼
midukaze (ã¿ã¥ãã) Thu, 07 Jan 2010 09:34:17 -0000
@actinium89 まとめると王女のパンツを買ったァー
Back in College Station
actinium (Andres Contreras) Thu, 07 Jan 2010 03:21:01 -0000
Back in College Station
500
Actinium - Data tables and historic information.
ChemGlobe: Actinium - Electronic, thermal, and steric data along with an isotope table.
Meta Description: [ The chemical element [Ac] - Actinium - Datasheet ]
ChemicalElements.com: Actinium - Basic information, atomic structure, and isotopes.
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EnvironmentalChemistry.com: Actinium - Atomic structure, properties, and table of nuclides.
It's Elemental: Actinium - Basic physical and historical information.
Meta Description: [ The Element Actinium - Basic Physical and Historical Information ]
LANL: Actinum - Basic information and history.
Lenntech: Actinium - Physical data, chemical properties, health and environmental effects.
Meta Description: [ chemical properties, health and environmental effects of actinium ]
Visual Elements: Actinium - Image, sources, biological role, key isotopes, and oxidation states.
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WebElements: Actinium - Extensive information on history, uses, occurrence, compounds, and properties.
Meta Description: [ This WebElements periodic table page contains key information for the element actinium ]
Wikipedia: Actinium - Details the properties of the element, including its history, applications, and characteristics.
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