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The d & f Block Elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryThe d & f Block Elements1 Mark
MCQ
The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of Cr3+ ion is ___________.
  • A
    2.87 B.M.
  • B
    3.87 B.M.
  • C
    3.47 B.M.
  • D
    3.57 B.M.
✓

Answer

  1. 3.87 B.M.

Explanation:

The magnetic moment is associated with its spin angular momentum and orbital angular momentum.

Spin only magnetic moment value of Cr3+. ion is 3d3

Hence, magnatic moment

$(\mu)=\sqrt{\text{n(n+2)}}\text{BM}$

$=\sqrt{3(3+2)}=\sqrt{15}$

$=3.87\text{BM}$

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