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Asked by Prasad
May 19, 2014
Member since Apr 24, 2013
According to Fajan’s rule “with the increase in size of anion the covalent character in a molecule increases”. With the increase in size of the anion the electron cloud density shifted to center, thus increases the covalent character. In LiI the anion 'I' has bigger size compared anion 'F' in LiF, therefore LiI is more covalent than LiF.