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Why are the theoretical and Born Haber lattice enthalpies different?

The theoretical Born Haber enthalpy assumes a perfect ionic model where the attraction between the ions is purely electrostatic and the ions are purely spherical. The Born Haber lattice enthalpy is the real experimental value.

Answered by Amit V. • Chemistry tutor

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Why are the theoretical and Born Haber lattice enthalpies different?

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