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Prasad

May 19, 2014

LiI is more covalent than LiF

Why LiI is more covalent than LiF ?Explain?

Answers(1)

Answer

Satyanarayana Prasad

Ans:
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.

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