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It is placed as the heaviest member of group 15 (VA) although a sufficiently stable isotope is not known at this time that would allow chemical experiments to confirm its position. It was first observed in 2003 and only about 30 atoms of ununpentium have been synthesized to date, with just 4 direct decays of the parent element having been detected. Two isotopes are currently known, Uup-287 and Uup-288, with 288Uup having the longer half-life of ~100 ms.
Originally posted by zaiger
Bob Lazar said a LOT of things infact so many things i do not believe he can post on ATS anyomore. But jkrog was right bob lazar was talkin about 115.