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D and F Block Elements question

2022 · Q126
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D and F Block Elements question

2022 · Q126

NEETChemistryD and F Block ElementsMCQ+4 / −1

Given below are two statements :

Statement I : Cr2+ is oxidising and Mn3+ is reducing in nature.

Statement II : Sc3+ compounds are repelled by the applied magnetic field.

In the light of the above statements, choose the most appropriate answer from the options given below :

  1. A
    Statement I is incorrect but Statement II is correct
  2. B
    Both Statement I and Statement II are correct
  3. C
    Both Statement I and Statement II are incorrect
  4. D
    Statement I is correct but Statement II is incorrect
View written solutionFree

Correct answer: A

Statement I : Cr2+ is reducing as its configuration changes from d4 to d3, the latter having a half-filled t2g level. On the other hand, the change from Mn3+ to Mn2+ results in the half-filled (d5) configuration which has extra stability.

Statement II : Sc3+ has zero unpaired electron, so magnetic moment is also zero. Hence, Sc3+ will repelled by the applied magnetic field.

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