Physical and thermodynamic characteristics of aqueous solutions of rare-earth salts

Literature data on the B-viscosity coefficients of aqueous solutions of rare-earth salts are analyzed. The revealed dependences of the B-viscosity coefficients, partial molar ionic volumes, partial molar heat capacities, and limit molar ionic conductivities of REE aqua ions on the inverse ionic radius might be due to the decrease in the coordination number of the REE aqua ion from 9 to 8 in the sequence Nd(3+)-Gd(3+). The B-viscosity coefficient, partial molar ionic volume, and partial molar heat capacity of the Pm(3+) aqua ion are calculated.