(The oxides and peroxides for these alkali metals do exist, but do not form upon direct reaction of the metal with oxygen at standard conditions.)
ðɪ ˈɑːksaɪdz ænd pəɹˈɑːksaɪdz fɔːɹ ðiːz ˈælkəlˌaɪ mˈɛɾəlz dˈuː ɛɡzˈɪst, bˌʌt duːnˌɑːt fˈɔːɹm əpˌɑːn dᵻɹˈɛkt ɹɪˈækʃən ʌvðə mˈɛɾəl wɪð ˈɑːksɪdʒən æt stˈændɚd kəndˈɪʃənz.