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  • All the following complex ions are found to be paramagnetic <img alt="Q : [CoF_6]^

All the following complex ions are found to be paramagnetic

P : [FeF_6]^{3-}

Q : [CoF_6]^{3-}

R : [V(H_2O)_6]^{3+}

S : [Ti(H_2O)_6]^{3+}

The correct order of their paramagnetic moment (spin only) is

Option: 1

 P > Q > R > S  


Option: 2

 P  <  Q < R < S           


Option: 3

 P = Q = R = S


Option: 4

 P > R > Q > S


Answers (1)

best_answer

Both the ligands given here viz. Cl^- and H_2O are weak field ligands and are unable to cause pairing in their given complexes with the respective metal ions.

The electronic distribution in the central metal ion is given as

Hence, we can see that the paramagnetism follows the order

Fe^{3+}>Co^{3+}>V^{3+}>Ti^{3+}

Therefore, option (1) is correct.

Posted by

Pankaj

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