Chemical Thermodynamics Part 3

If the enthalpy of sublimation of Li is 155kJmol−1, enthalpy of dissociation of F2 is 150kJmol−1, ionization enthalpy of Li is 520kJmol−1, electron gain enthalpy of F is −313kJmol−1, standard enthalpy of formation of LiF is −594kJmol−1. The magnitude of lattice enthalpy of LiF is ____ kJmol−1. (Nearest Integer)