However, ununennium may not be an alkali metal due to relativistic effects, which are predicted to have a large influence on the chemical properties of superheavy elements; even if it does turn out to be an alkali metal, it is predicted to have some differences in physical and chemical properties from its lighter homologues.
haʊˈɛvɚ, ʌnˌʌnɛnˈɪəm mˈeɪ nˌɑːt biː ɐn ˈælkəlˌaɪ mˈɛɾəl dˈuː tə ɹˌɛləɾɪvˈɪstɪk ɪfˈɛkts, wˌɪtʃ ɑːɹ pɹɪdˈɪktᵻd tə hæv ɐ lˈɑːɹdʒ ˈɪnfluːəns ɔnðə kˈɛmɪkəl pɹˈɑːpɚɾiz ʌv sˈuːpɚhˌɛvi ˈɛlɪmənts; ˈiːvən ɪf ɪt dˈʌz tˈɜːn ˈaʊt təbi ɐn ˈælkəlˌaɪ mˈɛɾəl, ɪɾ ɪz pɹɪdˈɪktᵻd tə hæv sˌʌm dˈɪfɹənsᵻz ɪn fˈɪzɪkəl ænd kˈɛmɪkəl pɹˈɑːpɚɾiz fɹʌm ɪts lˈaɪɾɚ hˈɑːməlˌɑːɡz.