(The alkali metals can also form negative ions, known as alkalides, but these are little more than laboratory curiosities, being unstable.)
ðɪ ˈælkəlˌaɪ mˈɛɾəlz kæn ˈɔːlsoʊ fˈɔːɹm nˈɛɡətˌɪv ˈaɪɑːnz, nˈoʊn æz ˈælkəlˌaɪdz, bˌʌt ðiːz ɑːɹ lˈɪɾəl mˈoːɹ ðɐn lˈæbɹətˌɔːɹi kjˌʊɹɹɪˈɔsᵻɾiz, bˌiːɪŋ ʌnstˈeɪbəl.