Changing 1 mol of Mg(s) and 1/2 mol of O2 (g) to gaseous atoms requires a total of approximately 150kJ of energy. The first and second ionization energies of Mg are 737kJ/mol and 1450kJ/mol respectively. The first and second electron affinities of Oxygen are -141KJ/mol and +844 kJ/mol respectively. The stardard hear of formation ofMgO(s) is -602kJ/mol. Calculate the Lattice Energy of magnesium oxide based on the above given information. (enter the sign and numerical answer without units. Include 4 significant digits in your answer, do not use scientific notation)