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STD 12 - 4. d and f- block elements — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 4. d and f- block elements4 Marks
MCQ
Which of the following complex will show maximum paramagnetism ?
  • A
    $3d^4$
  • ✓
    $3d^5$
  • C
    $3d^6$
  • D
    $3d^7$
✓

Answer

Correct option: B.
$3d^5$
b
Among high spin complexes, $3 d ^5$ will show maximum paramagnetism as it has maximum number of unpaired electrons.High spin $3 d^4, 3 d^5, 3 d^6$ and $3 d^7$ have $4,5,4$ and 3 unpaired electrons respectively.

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