Problem: Which compound in each of the following pairs has the larger lattice energy? Note: Mg2+ and Li+ have similar radii; O2– and F– have similar radii. Explain your choices.(b) LiF or MgO

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  •  Lattice Energy is the energy required to combine gaseous ions into a solid, crystalline structure. 

  •  Lattice Energy can be approximated using the equation for ionic bond energy


The higher the ionic bond energy, the greater the lattice energy

            where radius is the period number


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Problem Details

Which compound in each of the following pairs has the larger lattice energy? Note: Mg2+ and Li+ have similar radii; O2– and F have similar radii. Explain your choices.
(b) LiF or MgO