ðə sˌiːˈɛs ˌɛfˈɑːɹ mˈɑːlɪkjˌuːl ɪz pˈoʊlɚɹˌaɪzd æz sˌiːˈɛs plˈʌs ˌɛfˈɑːɹ mˈaɪnəs, ʃˈoʊɪŋ ðætðə sˈɛvən z sˈʌbʃɛl ʌv fɹˈænsiəm ɪz mˈʌtʃ mˈoːɹ stɹˈɔŋli ɐfˈɛktᵻd baɪ ɹˌɛləɾɪvˈɪstɪk ɪfˈɛkts ðɐn ðə sˈɪks ᵻz sˈʌbʃɛl ʌv sˈiːsiəm.
The CsFr molecule is polarised as Cs+Fr−, showing that the 7s subshell of francium is much more strongly affected by relativistic effects than the 6s subshell of caesium.