ɪnðə pɹˈɛzəns ʌv flˈʊɹɹaɪd, tˈæntæləm pˈɛntɐflˌʊɹɹaɪd fˈɔːɹmz ðɪ ˈænaɪənz , , ɔːɹ , dᵻpˈɛndɪŋ ɔnðə nˈeɪtʃɚɹ ʌvðə kˈaʊntɚɹˌaɪɑːn ænd ðə kˌɑːnsəntɹˈeɪʃən ʌv ˌeɪtʃˈɛf.
In the presence of fluoride, tantalum pentafluoride forms the anions , , or , depending on the nature of the counterion and the concentration of HF.