Use the Born-Haber cycle and given data Hf(CsCl)=438.0kJ/molHf(CsCl)=438.0kJ/mol, IE1(Cs)=376kJ/molIE1(Cs)=376kJ/mol, sublimation energy Hsub(Cs)=78.0kJ/molHsub(Cs)=78.0kJ/mol, the bond energy of Cl2(g)Cl2(g)

Use the Born-Haber cycle and given data ΔH∘f(CsCl)=−438.0kJ/molΔHf∘(CsCl)=−438.0kJ/mol, IE1(Cs)=376kJ/molIE1(Cs)=376kJ/mol, sublimation energy ΔHsub(Cs)=78.0kJ/molΔHsub(Cs)=78.0kJ/mol, the bond energy of Cl2(g)Cl2(g) is 243 kJ/molkJ/mol, EA(Cl)=−349kJ/molEA(Cl)=−349kJ/mol to calculate the lattice energy of CsCl   

Express the lattice energy with the appropriate units.