2.5 Use Equation (2.7) to calculate the lattice ener of the ionic oxide CaO, which has the halite (NaCl) structure; a = 1.75, n = 9, ro = 0.240 nm. 2.6 Use Equation (2.7) to calculate the lattice energy of the ionic halides NaCl and KCl, which have the halite (NaCl) structure; ro(NaCl) = 0.281 nm, a = 1.75, n = 9, ro(KCI)=0.314 nm. 2.7 Use Equation (2.7) to calculate the lattice energy of the ionic halides NaBr and KBr, which have the halite (NaCl) structure; 9 r(NaBr) = 0.298 nm, = 0.240 nm. NA U₁ = (N^az² +²) (1-1) I image text nswer r answered this nswers OCT (2.7) n 14 RA Was this answer helpful?