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OpenStudy (anonymous):
Magnesia (MgO) is a very stable ionic solid commonly used as an inert containment vessel in high temperature experiments. The Born exponent, n, is 5.6 for MgO and its Madelung constant is 1.75. The ionic radii of Mg2+ and O2− are 48 and 145 pm, respectively. Calculate the dissociation energy of a single MgO ion pair in the gaseous state. Express your answer in units of electron volts (eV) per ion pair.
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