Question: 1 3 . 8 For NaCI, the ionic radii for Nat and CI - ions are 0 . 1 0 2 and 0 . 1

13.8 For NaCI, the ionic radii for Nat and CI- ions are 0.102 and 0.181 nm. respectively . If an externally applied electric field produces a 5% expansion of the lattice, compute the dipole moment for each Na+-Cl- pair. Assume that this material is completely unpolarized in the absence of an electric field.

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