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Consider the following complex ions P = [FeF 6 ] 3– Q = [V(H 2 O) 6 ] 2+ R = [Fe(H 2 O) 6 ] 2+ The correct order of the complex ions, according to their spin only magnetic moment values (in B.M.) is :

1. R < Q < P
2. R < P < Q
3. Q < R < P
4. Q < P < R

Correct answer: Q < R < P

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