Which of the following ionic compounds has the highest (most negative) lattice energy? SrF2 MgF2 SrI2 KCl NaF LiF CaCl2

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Answer 1

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Answer #1

Ionic compounds having following properties has highest lattice enthalpy

(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

Answer 2

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