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Calculate the lattice energy for the hypothetical ionic compound M2X from the information given below. IE1(M) = 424 kJ/mol M(s) => M(g) ?Ho = 84.3 kJ/mol ?Hof(M2X) = -888.3 kJ/mol X2(g) => 2X(g) ?H = 231 kJ EA1+EA2 (X) = 476 kJ/mol IE1 (X) = 271 kJ/mol

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