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The reaction [Fe(CNS)6]^(3-)rarr[FeF6]^(...

The reaction `[Fe(CNS)_6]^(3-)rarr[FeF_6]^(3-)` takes place with:

A

(a) decrease in magnetic moment

B

(b) increase in coordination number

C

(c) decrease in coordination number

D

(d) increase in magnetic moment

Text Solution

Verified by Experts

The correct Answer is:
D
`[Fe(CNS)_6]^(3-)` is inner-orbital complex with one electron unpaired while `[FeF_6]^(3-)` is outer-orbital complex with five unpaired electrons.
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A2Z-COORDINATION COMPOUNDS-Wemer Theory And Vbt
  1. Consider the follwing complexes ion P,Q and R P =[FeF(6)]^(3-), Q=[V...

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  2. Among the following ions which one has the highest paramagnetism?

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  3. The reaction [Fe(CNS)6]^(3-)rarr[FeF6]^(3-) takes place with:

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  4. dsp^2-hybridization is found in

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  5. The primary valency of iron in K4[Fe(CN)6] is

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  6. The magnetic moment of K3[Fe(CN)6] is found to be 1.7 B.M. How many un...

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  7. [Cr(H2 O)6]Cl3 (at no. of Cr = 24) has a magnetic moment of 3.83 B.M. ...

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  8. Which of the following complex is an outer orbital complex?

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  9. The correct order of magnetic moments (spin values in B.M.) among is:

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  10. Which of the following has the regular tetrahedral structure?

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  11. Which one of the following has lowest value of paramagnetic behaviour?

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  12. Velence bond theroy describes the bonding in complexs in terms of coor...

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  13. Nickel (Z=28) combines with a uninegative monodentate ligand X^(-) to ...

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  14. Which one of the following has a square planar geometry? (Co=27, Ni=...

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  15. The octahedral complex of a metal ion M^(3+) with four monodentate lig...

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  16. Which of the following facts about the complex [Cr(NH3)6]Cl3 is wrong?

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  17. The magnetic moment (spin only) of [NiCl4]^(2+) is

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  18. Which of the following is a low spin complex?

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  19. Complexes with halide ligands are generally:

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  20. Among the following ions, which one has the highest paramagnetism?

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