Calculate the enthalpies of formation, ΔHf∘, of the group 1 fluoride compounds from their elements using the Born–Haber cycle.
Process ????H∘, ????????/????????????
sublimation of K(s) 90
sublimation of Cs(s) 78
dissociation of F2(g) 158
ionization energy of K(g) 419
ionization energy of Cs(g) 376
electron affinity of F(g) −322
lattice enthalpy of KF(s) 821
lattice enthalpy of CsF(s) 750