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Give Fajan rule. |
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Answer» Solution :(i) The smaller the size of the cation and the larger the size of the anion, the GREATER the covalent character of an ionic bond. (ii) The greater the charge on the cation, the greater the covalent character of the ionic bond. (iii) For cations of the same size and charge, the one, with electronic configuration (N - 1) `d^(n) s^(0)` , typical of transition metals, is more POLARISING than the one with a NOBLE gas configuration,`ns^(2) np^(6)` , typical of alkali and alkaline EARTH metal cations. |
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