ON THE POSSIBILITY OF REDUCTION OF AC3-ETHANOLIC SOLUTIONS OF BIVALENT SAMARIUM( TO AC2+ IN AQUEOUS)

In view of contradictory data on the existence of AC(2+) in aqueous so lutions, the possibility of actinium reduction was examined in aqueous -ethanolic solutions in which bivalent f-elements are more stable than in aqueous media. In the presence of bivalent samarium (E(Sm3+/Sm2+)( O) = -1.5 V) Ac(III) is not reduced to Ac(II). These results disagree with the previously published data on the radiopolarographic generatio n of Ac(II) in aqueous solutions.