Talk:Isotopes of fermium

Mendelevium
Theoretically, is there an isotope of Fermium that decays into Mendelevium? So far, by extending the rn-process, I have gotten this far, but none decay into Mendelevium. Could maybe an extremely neutron-rich isotope decay into Mendelevium, and if so, what is it/could it be? 32ieww (talk) 19:44, 11 February 2017 (UTC)


 * It's not that unlikely. Probably a lot would. The problem is that they're all probably heavier than 260, so there'd be no way to reach them at present. Or rather, there is a way, but it's banned by treaty. :) Double sharp (talk) 15:15, 8 May 2024 (UTC)

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Spontaneous fission of 242Fm
Should it be noted that 242Fm is the lightest known nuclide to undergo purely spontaneous fission? 129.104.241.214 (talk) 01:57, 23 October 2023 (UTC)

Perhaps 257Fm is the last beta-stable nuclide whose SF branch is not significant
After all, the only known heavier beta-stable nuclides are 258Fm, 260Fm, 259Md, 260No and 262No, for all of which the only known decay mode is SF. 129.104.241.214 (talk) 11:35, 28 November 2023 (UTC)

Theoretical alpha half-life of 258,259Fm
See here for 258Fm, and likewise for 259Fm. Alpha decays for both isotopes are predicted to be very insignificant (alpha partial half-lives similar to longer than that of the most stable isotope of fermium 257Fm). 129.104.241.242 (talk) 03:36, 5 May 2024 (UTC)