Calculate the net energy change in kilojoules per mole that takes place on formation of MgF2(s) from the elements: Mg(s)+F2(g)⟶MgF2(s) The following information is needed: Heat of sublimation for M

g(s)= 147.7 kJ/mol Eea for F(g)= −328 kJ/mol Bond dissociation energy for F2(g)= 158 kJ/mol Ei1 for Mg(g)= 737.7 kJ/mol Electrostatic interactions in MgF2(s)= −2957 kJ/mol Ei2 for Mg(g)= 1450.7 kJ/mol