Although a simple extrapolation of the periodic table (by the aufbau principle) would put element 169, unhexennium, under ununennium, Dirac-Fock calculations predict that the next element after ununennium with alkali-metal-like properties may be element 165, unhexpentium, which is predicted to have the electron configuration
ɔːlðˈoʊ ɐ sˈɪmpəl ɛkstɹˈæpəlˈeɪʃən ʌvðə pˌiəɹɪˈɑːdɪk tˈeɪbəl baɪ ðɪ ˈɔːfbaʊ pɹˈɪnsɪpəl wʊd pˌʊt ˈɛlɪmənt wˈʌnhˈʌndɹɪd sˈɪksti nˈaɪn, ʌnhɛksˈɛniəm, ˌʌndɚɹ ʌnˌʌnɛnˈɪəm, dˈɜːɹækfˈɑːk kˌælkjʊlˈeɪʃənz pɹɪdˈɪkt ðætðə nˈɛkst ˈɛlɪmənt ˈæftɚɹ ʌnˌʌnɛnˈɪəm wɪð ˈælkəlˌaɪmˈɛɾəllˈaɪk pɹˈɑːpɚɾiz mˈeɪ biː ˈɛlɪmənt wˈʌnhˈʌndɹɪd sˈɪksti fˈaɪv, ʌnhɛkspˈɛntiəm, wˌɪtʃ ɪz pɹɪdˈɪktᵻd tə hæv ðɪ ᵻlˈɛktɹɑːn kənfˌɪɡjɚɹˈeɪʃən