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306 CHAPTER 3
Fig. 3.43. The probability of
finding an ion of one type of
charge as a function of dis-
tance.
the probability of finding an i type of ion in a dr-thick spherical shell at a radius r from
a reference ion k of opposite charge
where
This probability of finding an ion of one type of charge near an ion of the opposite
charge varies in an interesting way with distance (Fig. 3.43). For small values of r, the
function is dominated by rather than by and under these conditions
increases with decreasing r; for large values of and increases with
