The synthesis of ununennium was first attempted in 1985 by bombarding a target of einsteinium-254 with calcium-48 ions at the superHILAC accelerator at the Lawrence Berkeley National Laboratory in Berkeley, California.
ðə sˈɪnθəsˌɪs ʌv ʌnˌʌnɛnˈɪəm wʌz fˈɜːst ɐtˈɛmptᵻd ɪn nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi fˈaɪv baɪ bəmbˈɑːɹdɪŋ ɐ tˈɑːɹɡɪt ʌv aɪnstˈaɪniəm tˈuːhˈʌndɹɪd fˈɪfti fˈoːɹ wɪð kˈælsiəm fˈoːɹɾi ˈeɪt ˈaɪɑːnz æt ðə sˈuːpɚ hˈɪlæk ɐksˈɛlɚɹˌeɪɾɚɹ æt ðə lˈɔːɹəns bˈɜːkli nˈæʃənəl lˈæbɹətˌɔːɹi ɪn bˈɜːkli, kˌælɪfˈoːɹniə.