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Chapter , Problem 93AE

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QUESTION:

From the ionic radii given in Figure , calculate the potential energy of a  and  ion pair that is just touching (the magnitude of the electronic charge is given on the back-inside cover). Calculate the energy of a mole of such pairs. How does this value compare with the lattice energy of  (Table 8.2)? Explain.

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QUESTION:

From the ionic radii given in Figure , calculate the potential energy of a  and  ion pair that is just touching (the magnitude of the electronic charge is given on the back-inside cover). Calculate the energy of a mole of such pairs. How does this value compare with the lattice energy of  (Table 8.2)? Explain.

ANSWER:

Step 1 of 3

The potential energy between two collaborating charged particles is given by the equation

                                                         ..... . .(1)

Here,

  = The potential energy,

 and  are the charges on particles in coulombs, and,

 = distance between their centers in meters.

K = Coulomb constant,

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