Respuesta :
Highest lattice energy present in MgF₂.
Ionic compounds having following properties has highest lattice energy.
(i) Ions having small radii
(ii) Compound having high charge
KCl, NaF and LiF all are +1 and -1 charges respectively
But in SrF₂, MgF₂ and CaCl₂ , each cation is dipositive
But size order of cations is:
Mg < Ca< Sr
Thus, Answer is MgF₂.
In chemistry, the lattice energy is the energy exchange upon formation of one mole of a crystalline ionic compound from its constituent ions, which can be assumed to initially be within the gaseous kingdom. It's far a measure of the cohesive forces that bind ionic solids.
Lattice energy may be described because the energy required to transform one mole of an ionic stable into gaseous ionic parts. Alternatively, it may be described as the power that ought to be provided to one mole of an ionic crystal with a purpose to separate it into gaseous ions in a vacuum thru an endothermic system.
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