title: The two radii of a charged particle.
abstract: The existence of two radii of each charged particle-a geometric and electrokinetic radii, is supposed. The mathematical relationship between them in the four possible combinations of an ion and its counterion is analyzed: (i) at equal geometric radii and, in absolute values, equal valencies; (ii) at equal geometric radii and, in absolute values, different valencies; (iii) at different geometric radii and, in absolute values, equal valencies; (iv) at different geometric radii and, in absolute values, different valencies. One of the equations worked out can be used to define the relationship between the geometric and electrokinetic radii of a polyion. All the equations are used in working out precise calculations.
authors.affiliation: Department of Biochemistry, Bulgarian Academy of Medicine, Sofia.
authors.forename: B M
authors.initials: BM
authors.lastname: Michov
mesh_terms: D007477:Ions; D007700:Kinetics; D055585:Physical Phenomena; D010825:Physics; D012996:Solutions
chemical_list: D007477:Ions; D012996:Solutions