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- Isotopes_of_actinium abstract "Actinium (Ac) has no stable isotopes, thus a standard atomic mass cannot be given. There are 31 known isotopes, from 206Ac to 236Ac, and 2 isomers. Two isotopes are found in nature, 227Ac and 228Ac, as intermediate decay products of, respectively, 235U and 232Th. 228Ac is extremely rare, and almost all natural actinium is 227Ac.The most stable isotopes are 227Ac with a half-life of 21.772 years, 225Ac with a half-life of 10.0 days, and 226Ac with a half-life of 29.37 hours. All other isotopes have half-lives under 10 hours, and most under a minute. The shortest-lived known isotope is 217Ac with a half-life of 69 ns. Actinium also has two meta states.Purified 227Ac comes into equilibrium with its decay products (227Th and 223Fr) after 185 days.".
- Isotopes_of_actinium wikiPageExternalLink pdf.
- Isotopes_of_actinium wikiPageExternalLink atomic-weights_revised05.html.
- Isotopes_of_actinium wikiPageExternalLink pdf.
- Isotopes_of_actinium wikiPageExternalLink Nubase2003.pdf.
- Isotopes_of_actinium wikiPageExternalLink nudat2.
- Isotopes_of_actinium wikiPageID "2526862".
- Isotopes_of_actinium wikiPageRevisionID "545555279".
- Isotopes_of_actinium element "actinium".
- Isotopes_of_actinium hasPhotoCollection Isotopes_of_actinium.
- Isotopes_of_actinium heavier "Isotopes of thorium".
- Isotopes_of_actinium lighter "Isotopes of radium".
- Isotopes_of_actinium subject Category:Actinium.
- Isotopes_of_actinium subject Category:Isotopes_of_actinium.
- Isotopes_of_actinium subject Category:Lists_of_isotopes_by_element.
- Isotopes_of_actinium type Abstraction100002137.
- Isotopes_of_actinium type Atom114619225.
- Isotopes_of_actinium type Isotope114619658.
- Isotopes_of_actinium type IsotopesOfActinium.
- Isotopes_of_actinium type Matter100020827.
- Isotopes_of_actinium type Part113809207.
- Isotopes_of_actinium type PhysicalEntity100001930.
- Isotopes_of_actinium type Relation100031921.
- Isotopes_of_actinium type Substance100019613.
- Isotopes_of_actinium comment "Actinium (Ac) has no stable isotopes, thus a standard atomic mass cannot be given. There are 31 known isotopes, from 206Ac to 236Ac, and 2 isomers. Two isotopes are found in nature, 227Ac and 228Ac, as intermediate decay products of, respectively, 235U and 232Th. 228Ac is extremely rare, and almost all natural actinium is 227Ac.The most stable isotopes are 227Ac with a half-life of 21.772 years, 225Ac with a half-life of 10.0 days, and 226Ac with a half-life of 29.37 hours.".
- Isotopes_of_actinium label "Isotopen van actinium".
- Isotopes_of_actinium label "Isotopes de l'actinium".
- Isotopes_of_actinium label "Isotopes of actinium".
- Isotopes_of_actinium label "Изотопы актиния".
- Isotopes_of_actinium label "アクチニウムの同位体".
- Isotopes_of_actinium label "錒的同位素".
- Isotopes_of_actinium sameAs Anexo:Isótopos_de_actinio.
- Isotopes_of_actinium sameAs Isotopes_de_l'actinium.
- Isotopes_of_actinium sameAs アクチニウムの同位体.
- Isotopes_of_actinium sameAs Isotopen_van_actinium.
- Isotopes_of_actinium sameAs m.011b80s6.
- Isotopes_of_actinium sameAs Q2417724.
- Isotopes_of_actinium sameAs Q2417724.
- Isotopes_of_actinium sameAs Isotopes_of_actinium.
- Isotopes_of_actinium wasDerivedFrom Isotopes_of_actinium?oldid=545555279.
- Isotopes_of_actinium isPrimaryTopicOf Isotopes_of_actinium.