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The d-electronic configuration of Cr^(2+...

The d-electronic configuration of `Cr^(2+), Mn^(2+), Fe^(2+) and Ni^(2+)` are, `3^(4), 3d^(5), 3d^(6) and 3d^(8)` respectively. Which of the following aqua complexes will exhibit the minimum paramagnetic behavior?

A

`"["Fe(H_(2)O)_(6)"]"^(2+)`

B

`"["Ni(H_(2)O)_(6)"]"^(2+)`

C

`"["Cr(H_(2)O)_(6)"]"^(2+)`

D

`"["Mn(H_(2))_(6)"]"^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
B
In the complex `"["Ni(H_(2)O_(6)"]"^(2+)` the configuration of `Ni^(2+)` ion is `[Ar]3d^(8)`
with two unpaired electrons, It has the minimum paramagnetic character.
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DINESH PUBLICATION-D-AND -F BLOCK ELEMENTS-Select the correct answer
  1. The pair in which species have the same magnetic moment is:

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  2. Identify the incorrect statement among the following:

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  3. The d-electronic configuration of Cr^(2+), Mn^(2+), Fe^(2+) and Ni^(2+...

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  4. The correct of decreasing second ionisation enthalpy of Ti(22),V(23),C...

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  5. Which one of the elements with the following outer orbital configurati...

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  6. Which of the following transition metal ion is not coloured?

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  7. Which of the following ions will exhibit colour in aqueous solution ?

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  8. Which of the following pairs has the same ionic are:

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  9. Which of the following species has maximum magnetic moment?

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  10. Identify the product and the colour when MnO(2) is fused with solid KO...

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  11. Acidified K(2)Cr(2)O(7), solution turns green when Na(2)SO(3) is added...

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

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  13. Which of the following species is/are paramagnetic? Fe^(2+),Zn^(0),H...

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  14. The titanium (atomic number 22) compound that does not exist is

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  15. Which of the statement is not true?

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  16. Which one of the following does not correctly represent the correct or...

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  17. Four successive members of the first series of transition metals are l...

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  19. The expression for effective magnetic moment (mu(eff)) is

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  20. Which of the following lanthanoid ion is diamagnetic?

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