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  4. The magnetic moment (B.M.) of Fe 2+ ion is

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Q. The magnetic moment (B.M.) of $Fe ^{2+}$ ion is

The d-and f-Block Elements

Solution:

$Fe ^{2+} \Rightarrow 3 d^{6}, \,\,\,\,\, \therefore \,\,\,\,\, n=4$

Magnetic moment $=\sqrt{n(n+2)} B . M .=\sqrt{24} B.M$