After the introduction of the 18-column table, the group IB elements were moved to their current position in the d-block, while alkali metals were left in group IA.
ˈæftɚ ðɪ ˌɪntɹədˈʌkʃən ʌvðɪ ˈeɪtiːŋkˈɑːlʌm tˈeɪbəl, ðə ɡɹˈuːp ˌaɪbˈiː ˈɛlɪmənts wɜː mˈuːvd tə ðɛɹ kˈɜːɹənt pəzˈɪʃən ɪnðə dˈiːblˈɑːk, wˌaɪl ˈælkəlˌaɪ mˈɛɾəlz wɜː lˈɛft ɪn ɡɹˈuːp ˌaɪˈeɪ.