THEORETICAL-STUDY OF THE PHYSICOCHEMICAL PROPERTIES OF THE LIGHT TRANSACTINIDES

A theoretical study of the physicochemical properties of elements 104, 105, and 106 and their compounds in the gas phase and aqueous solutio ns has been undertaken using relativistic atomic and molecular codes. Trends in properties such as bonding, ionization potentials, electron affinities, energies of electronic transitions, stabilities of oxidati on states etc. have been defined within the corresponding chemical gro ups and within the transactinides. These trends are shown to be determ ined by increasing relativistic effects within the groups. The behavio ur of some gas phase compounds and complexes in solutions is predicted for the gas chromatography and solvent extraction experiments. Redox potentials in aqueous solutions of these elements are estimated.