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Give reasons for the following. a. LiC...

Give reasons for the following.
a. LiCI is more covalent than KCI.
b. LiI has lower melting point than LiF.
c. During electrolysis of molten sodium chloride, calcium chloride and potassium fluoride are added.

Text Solution

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(i) Due to smaller size , `Li^(+)` is more polarising than `Na^(+)` and hence LiCl is more covalent than NaCl .
(ii) Due toi bigger size , `I^(-)` is more polarizable than `F^(-)` and hence LiI is more covalent than LiF .
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