Under controlled conditions, however, all the alkali metals, with the exception of francium, are known to form their oxides, peroxides, and superoxides.
ˌʌndɚ kəntɹˈoʊld kəndˈɪʃənz, haʊˈɛvɚ, ˈɔːl ðɪ ˈælkəlˌaɪ mˈɛɾəlz, wɪððɪ ɛksˈɛpʃən ʌv fɹˈænsiəm, ɑːɹ nˈoʊn tə fˈɔːɹm ðɛɹ ˈɑːksaɪdz, pəɹˈɑːksaɪdz, ænd sˌuːpɚɹˈɑːksaɪdz.