The magnetic moment is measured in Bohr Magneton (BM).
Spin only magnetic moment of Fe in $\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$ and $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$ complexes respectively is:
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