Some things are the same regardless of whether youâre traveling domestically or internationally: for example, your clothes. However, you probably pack more bags and require more luggage for an international trip than youâd pack for a weekend away. Different climatic conditions as well as events on your itinerary will also dictate the best clothes to bring.
Definitions for lattice energy. lattice energy(Noun) The energy required to separate the ions of an ionic solid (especially a crystal) to infinity. Lattice energy. The lattice energy of an ionic solid is a measure of the strength of bonds in that ionic compound.
Forming the lattice reverses the sign on the enthalpy, so Î´H = -788 kJ per mole. So, even though it take 147 kJ/mol to form the ions, much more energy is released by lattice formation. The net enthalpy change is -641 kJ/mol. Thus, the formation of the ionic bond is exothermic. The lattice energy also explains why ionic compounds tend to have extremely high melting points.