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A topological index (It) of ionic characteristic is defined as It=(1+Δ+E i)·m i in this paper. It is of good selectivity and solubility for all simple cations. Colse relationship exists between It and 10 physic chemical properties of Ln 3+ ions, and 8 correlation coefficients among them are more than0.99.
It is of good selectivity and solubility for all simple cations. Colse relationship exists between It and 10 physic chemical properties. A topological index (It) of ionic characteristic is defined as It = (1 + Δ + E i) · mi in this paper. of Ln 3+ ions, and 8 correlation coefficients among them are more than 0.99.