ɐpˈɑːɹt fɹʌm ðˈɪs, ðɪ ˈælkəlˌaɪ mˈɛɾəlz ɑːɹ sˈʌtʃ stɹˈɔŋ ɹᵻdˈuːsɪŋ ˈeɪdʒənts ðæt ðeɪ kæn ˈiːvən ɹᵻdˈuːs bˈʌkmɪnstɚfˌʊlɚɹˌɛn tə pɹədˈuːs sˈɑːlɪd fˈʊlɚɹˌaɪdz ˌɛmˈɛn sˈiː sˈɪksti; sˈoʊdiəm, pətˈæsiəm, ɹuːbˈɪdiəm, ænd sˈiːsiəm kæn fˈɔːɹm fˈʊlɚɹˌaɪdz wˌɛɹ ˈɛn ˈiːkwəlz tˈuː, θɹˈiː, fˈoːɹ, ɔːɹ sˈɪks, ænd ɹuːbˈɪdiəm ænd sˈiːsiəm ɐdˈɪʃənəli kæn ɐtʃˈiːv ˈɛn ˈiːkwəlz wˈʌn.
Apart from this, the alkali metals are such strong reducing agents that they can even reduce buckminsterfullerene to produce solid fullerides MnC60; sodium, potassium, rubidium, and caesium can form fullerides where n = 2, 3, 4, or 6, and rubidium and caesium additionally can achieve n = 1.