Version: 2.2.98 (using KDE 4.3.1) OS: Linux Installed from: RedHat RPMs Description of problem: There are a least 2 isotopes described as stable, but have been found to be unstable within the last 6 years. Bismuth 209 has a half life of about 10^19 years http://physicsworld.com/cws/article/news/17319 Tellurium 128 has a half life of about 10^24 years http://ie.lbl.gov/toi/nuclide.asp?iZA=520128 Version-Release number of selected component (if applicable): 2.2.98 How reproducible: Always Steps to Reproduce: 1. Select Bi, Te 2. Check list of isotopes 3. Actual results: stable Expected results: should give half lives Additional info: These isotopes generate far less radioactivity than you would normally get from background radiation in everyday life. It would be safe, even if silly, to go around carrying a kilogram of the stuff in terms of radioactive exposure.
Reported with BODR: https://sourceforge.net/p/bodr/bugs/10/
The estimated age of the universe is 14 billion years, only about 1.4e10. So these are theoretical lifetimes incomprehensibly greater than the age of the universe. I think it's fair to call them 'stable' and leave it as is. It might be interesting to add another setting that lists theoretical lifetimes when a user clicks.
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This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!