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Which of these statements about [Co(CN)6...

Which of these statements about `[Co(CN)_6]^(3-)` is true?

A

`[Co(CN)_6]^(3-)`has no unpaired electrons and will be in low-spin configuration.

B

`[Co(CN)_6]^(3-)` has four unpaired electrons and will be in low-spin configuration.

C

`[Co(CN)_6]^(3-)` has four unpaired electrons and will be in high-spin configuration.

D

`[Co(CN)_6]^(3-)` has no unpaired electrons and will be in a high-spin configuration.

Text Solution

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The correct Answer is:
A
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TARGET PUBLICATION-COORDINATION COMPOUNDS-COMPETITIVE THINKING
  1. In which of the following coordination entities the magnitude fo Delta...

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  2. What type of hybridisation is involved in [Fe(CN)6]^(3-) ?

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  3. Which of these statements about [Co(CN)6]^(3-) is true?

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  4. Which of the following complexes is paramagnetic

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  5. Which one of the following complexes has highest magnetic moment value...

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  6. The pair having the same magnetic moment is. [ At. No. :Cr = 24, Mn ...

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  7. Which of the following complex ions is expected to absorb visible ligh...

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  8. Which of the following complex ions is not expected to absorve visible...

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  9. How many out of [TiF6]^(2-), [CoF6]^(3-) , Cu2Cl2 and [NiCl4]^(2-) are...

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  10. Correct increasing order for the wavelengths of absorption in the visi...

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  11. Finely divided iron combines with CO to give .

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  12. Which of the following has the highest stability constant at 298 K ?

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  13. CuSO4 , solution with excess of KCN gives .

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  14. The complex used as an anticancer agent is .

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  15. The chelating ligand, which is used in the treatment of lead poisoning...

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  16. Wilkinson catalyst is

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  17. In the complex with formula MCl(3).4H(2)O the co-ordination number of ...

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  18. A solution contains 2.675 g of CoCl3.6NH3 ( molar mass =267.5 g mol^(...

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  19. On treatment of 100 mL of 0.1 M solution of CoCl3.6H2O with excess AgN...

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  20. The most stable complex among the following is

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