Ununennium is the temporary systematic element name for element 119 in the periodic table, which is currently not yet discovered or observed. It is a synthetic element predicted to belong to the group of alkali metals. Since ununennium has not been synthesized, there are no known isotopes or empirical data about its isotopes. However, theoretical predictions suggest that ununennium would possess several isotopes, like many other elements, based on its potential nuclear configurations.
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