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Lattice energy is __________. A. the energy required to convert a mole of ionic solid into its constituent ions in the gas phase B. the sum of ionization energies of the components in an ionic solid C. the sum of electron affinities of the components in an ionic solid D. the energy required to produce one mole of an ionic compound from its constituent elements in their standard states E. the energy given off when gaseous ions combine to form one mole of an ionic solid

Respuesta :

Answer: Option (A) is the correct answer.

Explanation:

Lattice energy is defined as the energy needed by an ionic solid to break its constituent components into gaseous ions.

For example, [tex]NaCl(s) \rightarrow Na^{+}(g) + Cl^{-}(g)[/tex]

Two factors that help in determining lattice energy are changes on the ions and size of ions.

So, larger is the charge on ions, smaller will be the size of ions. As a result, more energy is required to break the bond between ions. Hence, lattice energy will also increase.

Whereas when smaller is the charge on ions, larger will be the size of ions. As a result, less energy is required to break the bond between ions. Hence, lattice energy will also decrease.