Question

what is lattice enthalpy ?

Answer 1

Hey mate ^_^

Energy required to separate completely one mole of a solid ionic compound into gaseous constituent ions is called lattice enthalpy.

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Answer 2

The lattice energy of a crystalline solid is a measure of the energy released when ions are combined to make a compound. It is a measure of the cohesive forces that bind ions. Lattice energy is relevant to many practical properties including solubility, hardness, and volatility.