Which halide of magnesium has the highest ion | vedclass

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(D) According to Fajan's rule,the covalent character of an ionic bond increases with the increase in the size of the anion due to higher polarisabilit

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Fluoride

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(D) According to Fajan's rule,the covalent character of an ionic bond increases with the increase in the size of the anion due to higher polarisability. The size of the halide ions follows the order: $I^{-} > Br^{-} > Cl^{-} > F^{-}$. As the size of the anion increases,the covalent character increases,which means the ionic character decreases. Therefore,the order of ionic character is $MgF_2 > MgCl_2 > MgBr_2 > MgI_2$. Thus,magnesium fluoride $(MgF_2)$ has the highest ionic character.

Which halide of magnesium has the highest ionic character?

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