ðɪ ˈælkəlˌaɪ mˈɛɾəl pˈɑːlənˌaɪdz ɑːɹ ˈɔːl aɪˈɑːnɪk kˈɑːmpaʊndz kəntˈeɪnɪŋ ðə pˈoʊ tˈuː mˈaɪnəs ˈaɪɑːn; ðeɪ ɑːɹ vˈɛɹi kˈɛmɪkli stˈeɪbəl ænd kæn biː pɹədˈuːst baɪ dᵻɹˈɛkt ɹɪˈækʃən ʌvðɪ ˈɛlɪmənts æɾ ɚɹˈaʊnd θɹˈiːhˈʌndɹɪd fˈoːɹhˈʌndɹɪd dᵻɡɹˈiːz sˈiː.
The alkali metal polonides are all ionic compounds containing the Po2− ion; they are very chemically stable and can be produced by direct reaction of the elements at around 300–400 °C.