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Using Kapustinskii equation, determine the lattice energy of a hypothetical compound NaCl2 . Assume the sum...

Using Kapustinskii equation, determine the lattice energy of a hypothetical compound NaCl2 . Assume the sum of ionic radii to be 253pm. If the second ionization energy of Na is 4562 kJ/mol, what would be the enthalpy of formation of that compound?

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