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The d electron configurations of Cr2+, Mn2+, Fe2+ and Ni2+ are 3d4, 3d5, 3d6 and 3d8 respectively. Which one of the following aqua complexes will exhibit the minimum paramagnetic behaviour? [2007]           (At. No. Cr = 24, Mn = 25, Fe = 26, Ni = 28)
  • a)
    [Fe(H2O)6]2+
  • b)
    [Ni(H2O)6]2+
  • c)
    [Cr(H2O)6]2+
  • d)
    [Mn(H2O)6]2+
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The d electron configurations of Cr2+, Mn2+, Fe2+ and Ni2+ are 3d4, 3d...
Lesser is the number of unpaired electrons smaller will be the paramagnetic behaviour.
As Ni++ has minimum no. of unpaired e thus this is least paramagnetic.
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The d electron configurations of Cr2+, Mn2+, Fe2+ and Ni2+ are 3d4, 3d...
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The d electron configurations of Cr2+, Mn2+, Fe2+ and Ni2+ are 3d4, 3d...
Answer:

Explanation:
To determine the minimum paramagnetic behavior, we need to consider the number of unpaired electrons in each complex. The complex with the minimum number of unpaired electrons will exhibit the minimum paramagnetic behavior.

Cr2+ has a d electron configuration of 3d4, which means it has 4 unpaired electrons.
Mn2+ has a d electron configuration of 3d5, which means it has 5 unpaired electrons.
Fe2+ has a d electron configuration of 3d6, which means it has 4 unpaired electrons.
Ni2+ has a d electron configuration of 3d8, which means it has no unpaired electrons.

[Ni(H2O)6]2+ is the complex with the minimum paramagnetic behavior because it has no unpaired electrons. Therefore, the correct answer is option B.

Summary:
- The complex with the minimum paramagnetic behavior has no unpaired electrons.
- [Ni(H2O)6]2+ is the complex with the minimum paramagnetic behavior.
- The other complexes have 4 or 5 unpaired electrons.
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The d electron configurations of Cr2+, Mn2+, Fe2+ and Ni2+ are 3d4, 3d5, 3d6 and 3d8 respectively. Which one of the following aqua complexes will exhibit the minimum paramagnetic behaviour? [2007] (At. No. Cr = 24, Mn = 25, Fe = 26, Ni = 28)a)[Fe(H2O)6]2+b)[Ni(H2O)6]2+c)[Cr(H2O)6]2+d)[Mn(H2O)6]2+Correct answer is option 'B'. Can you explain this answer?
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The d electron configurations of Cr2+, Mn2+, Fe2+ and Ni2+ are 3d4, 3d5, 3d6 and 3d8 respectively. Which one of the following aqua complexes will exhibit the minimum paramagnetic behaviour? [2007] (At. No. Cr = 24, Mn = 25, Fe = 26, Ni = 28)a)[Fe(H2O)6]2+b)[Ni(H2O)6]2+c)[Cr(H2O)6]2+d)[Mn(H2O)6]2+Correct answer is option 'B'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about The d electron configurations of Cr2+, Mn2+, Fe2+ and Ni2+ are 3d4, 3d5, 3d6 and 3d8 respectively. Which one of the following aqua complexes will exhibit the minimum paramagnetic behaviour? [2007] (At. No. Cr = 24, Mn = 25, Fe = 26, Ni = 28)a)[Fe(H2O)6]2+b)[Ni(H2O)6]2+c)[Cr(H2O)6]2+d)[Mn(H2O)6]2+Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The d electron configurations of Cr2+, Mn2+, Fe2+ and Ni2+ are 3d4, 3d5, 3d6 and 3d8 respectively. Which one of the following aqua complexes will exhibit the minimum paramagnetic behaviour? [2007] (At. No. Cr = 24, Mn = 25, Fe = 26, Ni = 28)a)[Fe(H2O)6]2+b)[Ni(H2O)6]2+c)[Cr(H2O)6]2+d)[Mn(H2O)6]2+Correct answer is option 'B'. Can you explain this answer?.
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