Under typical conditions, pure hydrogen exists as a diatomic gas consisting of two atoms per molecule (H2); however, the alkali metals form diatomic molecules (such as dilithium, Li2) only at high temperatures, when they are in the gaseous state.
ˌʌndɚ tˈɪpɪkəl kəndˈɪʃənz, pjˈʊɹ hˈaɪdɹədʒən ɛɡzˈɪsts æz ɐ dˌaɪətˈɑːmɪk ɡˈæs kənsˈɪstɪŋ ʌv tˈuː ˈæɾəmz pɜː mˈɑːlɪkjˌuːl ˈeɪtʃ tˈuː; haʊˈɛvɚ, ðɪ ˈælkəlˌaɪ mˈɛɾəlz fˈɔːɹm dˌaɪətˈɑːmɪk mˈɑːlɪkjˌuːlz sˈʌtʃ ɐz dɪlˈɪθiəm, lˈaɪ tˈuː ˈoʊnli æt hˈaɪ tˈɛmpɹɪtʃɚz, wˌɛn ðeɪ ɑːɹ ɪnðə ɡˈæʃəs stˈeɪt.