Question: CaO adopts the NaCl-type structure with a = 4.80 . (a) Use the BornMayer equation to calculate the lattice-formation energy for CaO. (b) How well

CaO adopts the NaCl-type structure with a = 4.80 Å.

(a) Use the Born–Mayer equation to calculate the lattice-formation energy for CaO.

(b) How well does this estimate agree with the value of −3414 kJ/mol determined from the Born–Haber cycle?

(c) Calculate the size of the repulsive term as a percentage of the attractive term.

(d) Given the fact that SrO has the same structure, would you expect the lattice-formation energy of SrO to be larger or smaller than CaO?

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