Talk:Isotopes of radium
 | This article is rated List-class on Wikipedia's content assessment scale. It is of interest to the following WikiProjects: |
|||||||||||||
| ||||||||||||||
External links modified[edit]
Hello fellow Wikipedians,
I have just modified 2 external links on Isotopes of radium. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
- Added archive https://web.archive.org/web/20080923135135/http://www.nndc.bnl.gov/amdc/nubase/Nubase2003.pdf to http://www.nndc.bnl.gov/amdc/nubase/Nubase2003.pdf
- Added archive https://web.archive.org/web/20080923135135/http://www.nndc.bnl.gov/amdc/nubase/Nubase2003.pdf to http://www.nndc.bnl.gov/amdc/nubase/Nubase2003.pdf
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 18 January 2022).
- If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
- If you found an error with any archives or the URLs themselves, you can fix them with this tool.
Cheers.—InternetArchiveBot (Report bug) 14:18, 15 April 2017 (UTC)
About the actinides and fission products by decay chain thingy[edit]
Radium is not an actinide. 24.115.255.37 (talk) 18:23, 2 January 2022 (UTC)
- See the footnote in the template. Radium indeed is not an actinide, but it occurs in the decay chains of thorium and uranium, and the listed isotopes (226
Ra
and 228
Ra
) have half-lives several orders of magnitude than any of their daughters until stable lead. ComplexRational (talk) 18:49, 2 January 2022 (UTC)
221Fr and 221Ra are the lightest known nuclide to undergo cluster decay[edit]
According to Cluster decay#Experiments, 221Fr and 221Ra are the nuclides with the lowest mass number that are known to undergo cluster decay (the page Isotopes of barium says that 114Ba is predicted to undergo cluster decay, but this is not observed). So I think this "lightest nuclide" property should be noted for one of 221Fr and 221Ra or both of them in the table of isotopes, like what has been done for 242Cm.
The known isotopes of radium that undergo cluster decay (221-224,226Ra) are all beta stable. 129.104.241.214 (talk) 00:57, 4 December 2023 (UTC)
- Noted for both of them. 221Fr has the lowest atomic number, and 221Ra is the lightest. Nucleus hydro elemon (talk) 14:24, 28 December 2023 (UTC)
Electron capture of 216Ra[edit]
NUBASE2020 says that the branching ratio of electron capture 216Ra is <1×10-8%, which means that the decay mode has never been observed, and an EC half-life not exceeding half an hour can be excluded. I would like to compare it with 228U:
216Ra EC energy = 312.4 keV, half-life = unknown;
228U EC energy = 300.5 keV, half-life = 6h.
It is quite likely that the EC branching ratio of 216Ra is at the order of 10-9%. 129.104.241.214 (talk) 13:31, 2 March 2024 (UTC)