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56 bytes added, 19:11, 21 January 2019
'''Ununennium''' is a theoretical atom (following the IUPAC naming convention) which would have an [[atomic number]] of 119. This element does not exist in nature, and so far, it has not been created in a laboratory either despite multiple attempts. Since this atom would poses a single electron in its outer shell, it would be added to the [[periodic table]] under the [[alkali metal]]s, and is expected to have similar properties. Since it has not yet been created, it has not been included in the current periodic table.<ref></ref><ref></ref>
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