To determine the IUPAC name of an element with atomic number 119, we use the IUPAC naming convention for elements with atomic numbers greater than 100.$\\$The IUPAC system uses a systematic method based on Latin and Greek roots for the digits 0-9:$\\$• 0: nil$\\$• 1: un$\\$• 2: bi$\\$• 3: tri$\\$• 4: quad$\\$• 5: pent$\\$• 6: hex$\\$• 7: sept$\\$• 8: oct$\\$• 9: enn$\\$For the atomic number 119, we break it down into its individual digits:$\\$• 1: un$\\$• 1: un$\\$• 9: enn$\\$According to the IUPAC naming convention, we combine these roots and add the suffix "-ium":$\\$• un + un + enn + ium = ununennium$\\$Therefore, the IUPAC name of the element with atomic number 119 is "Ununennium".$\\$This corresponds to Option 1.