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  4. Spin only magnetic moment value of Cr3+ ion is

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Q. Spin only magnetic moment value of $ C{{r}^{3+}} $ ion is

Jharkhand CECEJharkhand CECE 2013

Solution:

$ C{{r}^{3+}}=3{{d}^{3}};
$ Hence, $ C{{r}^{3+}}=3{{d}^{3}}; $
$ Bm=\sqrt{3(3+2)}=\sqrt{15}=3.87\,BM $