20. Using the data below, calculate the lattice energy of magnesium oxide (MgO) MgO (s) - Mg2* (g) +O(g) Chemical Reaction AH° in k.J/mol 148 738 1450 499 -143 844 -602 Tvpe of reaction Heat of sublimation 1st Ionization Energy 2nd Ionization Energy Bond Energy 1st Electron Affinity 2nd Electron Affinity Heat of formation Mg(s) âM âM 02 (g) â20 2- (a) 4140 kJ/mol (b) 3890 kJ/mol (c) 2930 kJ/mol (d) 2680 kJ/mol (e) 2200 kJ/mol
