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

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryThe d & f Block Elements1 Mark
Question
The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of $Cr^{3+}$ ion is $...........$
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Answer

The magnetic moment is associated with its spin angular momentum and orbital angular momentum.Spin only magnetic moment value of $Cr^{3+}.$ ion is $3d^3$
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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