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The d-electron configurations of Cr^(2+)...

The d-electron configurations of `Cr^(2+), Mn^(2+), Fe^(2+)` and `Co^(2+)` are `d^4, d^5, d^6` and `d^7` respectively. Which one of the following will exhibit minimum paramagnetic behavious?

A

`[Cr(H_2O)_6]^(2+)`

B

`[Mn(H_2O)_6]^(2+)`

C

`[Fe(H_2O)_6]^(2+)`

D

`[Co(H_2O)_6]^(2+)`

Text Solution

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The correct Answer is:
D
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The d- electron configurations of Mn^(2+),Fe^(2+),Co^(3+) and Ni^(2+) ard 3d^(5),3d^(6),3d^(6),3d^(8) , respectively Which of the following aqua complexes will exhibit the minimum paramagnetic behviour ? .

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ERRORLESS-COORDINATION COMPOUNDS-PAST YEARS QUESTIONS
  1. Iron carbonyl, Fe(CO)5 is

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  2. The number of unpaired electrons in the complex ion [CoF(6)]^(3-) is

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  3. The d-electron configurations of Cr^(2+), Mn^(2+), Fe^(2+) and Co^(2+)...

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  4. Considering H2O as a weak field ligand, the number of unpaired electro...

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  5. In [Ag(CN)2]^(-), the number of pi bonds is

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  6. Which one of the following shows maximum paramagnetic character

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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 compounds will exhibit highest paramagn...

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  9. Which among the following is a paramagnetic complex

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  10. Which of the following is/are paramagnetic complex(es)?

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

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  12. Which of the following is an inner orbital complex as well as diamagne...

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  13. Atomic numbers of Cr and Fe and 24 and 26 respectively, Which of the f...

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  14. Which of the following complexes exhibits the highest paramagnetic beh...

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  15. Red precipitae is obtained when ethanol solution of dimethylglyoxime i...

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  16. Pick out the correct statement with respect to [Mn(CN)(6)]^(3-):

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  17. Which one of the following ions exhibits d-d transition and paramagnet...

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  18. The geometry and magnetic behaviour of the complex [Ni(CO)4] are

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  19. Match the metal ions given in Column I with the spin magnetic moments ...

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  20. Jahn - Teller effect is not observed in high spin complexes of

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