![]() ![]() Therefore lattice energy for NaCl is 756 KJ per mol. ![]() They do not easily deform, as well as they melt at relatively high temperatures. Ionic compounds are usually rigid, brittle, crystalline substances with flat surfaces in a lattice form. It is, electrons transfer from the metal to the non-metal. Recall that the reaction of a metal with a non-metal usually produces the ionic compound. Lattice energy can be a very complicated process but it can be easily understood by using Coulomb’s law. The attraction of the two ions releases energy, so this process is of an exothermic kind.
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