Target and transport systems

1 Theoretical predictions of complex formation of element 105 in aqueous acidic solutions 

Since transition elements are known to be subject to strong hydrolysis, the latter influences both the complex formation and extraction. 

Hydrolysis of cations. In studying hydrolysis, we have to distinguish between hydrolysis of cations and hydrolysis of complexes. For hydrolysis of cations, each step in the formation of a mononuclear species can be described as a successive loss of a proton 

Experimental data (Baes and Mesmer 1976) show that, within the entire range of HC1 concentrations, hydrolysis of group 5 elements and Pa has the trend, 

The simple electrostatic model of hydrolysis (Baes and Mesmer 1976), which predicts log K to change linearly with the ratio of the ionic charge to ionic radius, does not explain, for example, the difference between Nb and Ta having the same value of the formal charge and ionic radius, as it does not explain the reversed order 

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