Imatha kuchitapo kanthu ndi fluorine, yankho lamphamvu la alkali ndi fuming sulfuric acid pa 200 ℃.
Imatha kuchita ndi zinthu zambiri zopanda zitsulo zikatenthedwa.
Pewani kukhudzana ndi oxides, halogens, alkalis, interhalogen mankhwala, ndi nayitrogeni fluoride.
Tantalum imakhala ndi kukana kwa dzimbiri kolimba ku ma acid amphamvu, makamaka asidi wa sulfuric.