The ns1 configuration also results in the alkali metals having very large atomic and ionic radii, as well as very high thermal and electrical conductivity.
ðɪ ˌɛnˈɛs wˈʌn kənfˌɪɡjɚɹˈeɪʃən ˈɔːlsoʊ ɹɪzˈʌlts ɪnðɪ ˈælkəlˌaɪ mˈɛɾəlz hˌævɪŋ vˈɛɹi lˈɑːɹdʒ ɐtˈɑːmɪk ænd aɪˈɑːnɪk ɹˈeɪdɪˌaɪ, æz wˈɛl æz vˈɛɹi hˈaɪ θˈɜːməl ænd ᵻlˈɛktɹɪkəl kɑːndəktˈɪvᵻɾi.