Template:Did you know nominations/Ununpentium
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Ununpentium
- ... that the most stable known isotope of ununpentium, 289Uup, has a half-life of only 220 milliseconds?
- Reviewed: Not a self-nomination
Improved to Good Article status by Double sharp (talk). Nominated by Oceanh (talk) at 18:36, 17 September 2014 (UTC).