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Choose the correct order for the given properties.

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$NaF > {MgF}_{2} > {AlF}_{3} :$ order of polarising power of cation

$NaF < {MgF}_{2} < {AlF}_{3} :$ covalent character order

$NaF < {MgF}_{2} < {AlF}_{3} :$ melting point order

$NaF > {MgF}_{2} > {AlF}_{3} :$ lattice energy order

answer is A, B, C.

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Detailed Solution

Correct order of polarising power of cation is,
$NaF < {MgF}_{2} < {AlF}_{3}$

Thus, option D is incorrect.

Other order given in option A, B and C are correct.

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