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    113    

113 Uun Ununtrium

Metal, no stable and no natural isotopes.

Ununtrium

First made probably 2003 by bombarding americium with calcium. Thereby ununpentium was made, which decayed to ununtrium. In 2004, it was directly made by bombarding bismuth with zinc. Ununtrium decays further to roentgenium. Ununtrium isotopes have half-lifes of some milliseconds or maybe even seconds.


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