Covalent character of an ionic compound M+X- is favoured by

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JEE Main levelOne or more correct optionsDifficulty 2 of 3cb186

Covalent character of an ionic compound $M X^{+} X X^{-}$ is favoured by

Aa small cation
Ba large anion
Ca low charge on the cation
Da high charge on the anion

Answer: A, B, D

Fajans' rules: small cation size, large anion size and high charges on the ions increase polarisation and hence covalent character. A low cation charge reduces polarising power, so option 3 is incorrect. Options 1, 2 and 4 are correct.

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Covalent character of an ionic compound MX+XX− is favoured by

Answer: A, B, D

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Covalent character of an ionic compound $M X^{+} X X^{-}$ is favoured by