Some of these have ionic characteristics: taking the alloys with gold, the most electronegative of metals, as an example, NaAu and KAu are metallic, but RbAu and CsAu are semiconductors.
sˌʌm ʌv ðiːz hæv aɪˈɑːnɪk kˌæɹɪktɚɹˈɪstɪks: tˈeɪkɪŋ ðɪ ˈælɔɪz wɪð ɡˈoʊld, ðə mˈoʊst ᵻlˈɛktɹoʊŋɡətˌɪv ʌv mˈɛɾəlz, æz ɐn ɛɡzˈæmpəl, nˈɑː ˌoʊ ænd kˈaʊ ɑːɹ mətˈælɪk, bˌʌt ˌɑːɹbˈiː ˌoʊ ænd sˌiːˈɛs ˌoʊ ɑːɹ sˌɛmɪkəndˈʌktɚz.