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:The figure should have a footnote explaining that radium is added because of its relatively long half-life. <sup>226</sup>Ra has a longer half-life than any Ac isotope and a comparable half-life to various isotopes of Th, Am, Cm, and Cf, and while the absolute quantity of <sup>226</sup>Ra is still much less than <sup>238</sup>U, it does exist in [[secular equilibrium]] in any U sample. [[User:ComplexRational|ComplexRational]] ([[User talk:ComplexRational|talk]]) 14:49, 19 August 2021 (UTC)
== <sup>234</sup>Am: Spin
That looks impossible as <sup>234</sup>Am as an odd-odd nuclide, but I'm not sure. [[Special:Contributions/129.104.241.214|129.104.241.214]] ([[User talk:129.104.241.214|talk]]) 17:01, 6 March 2024 (UTC)
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