Which compound in each of the following pairs of ionic substances has the most exothermic lattice energy? Justify your answers. a. LiF, CsF b. NaBr, NaI c. BaCl2, BaO d. Na2SO4, CaSO4 e. KF, K2O f. Li2O, Na2S
_____________________________________ VOCABULARY MassPercent: Percent of the total mass of a compound that an element takes up mass of element x total mass * 100 = mass % of element X Molecula r Formula: actual ratio of atoms of one element to atoms of another element in a compound Empirical Formula: most reduced ratio of atoms of one element to atoms of another element in a compound Combustion: when a compound is burned in oxygen