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Q.

Choose the correct order for the given properties.
 

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a

NaF>MgF2>AlF3 : order of polarising power of cation

b

NaF<MgF2<AlF3: covalent character order
 

c

NaF<MgF2<AlF3: melting point order

d

 NaF>MgF2>AlF3:lattice energy order

answer is A, B, C.

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Detailed Solution

Correct order of polarising power of cation is,
NaF<MgF2<AlF3 

Thus, option D is incorrect. 

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

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