magnetic properties

Question

[Fe(CN)6]4− magnetic character is best described as:

RankGuru · Accepted Answer

1. **Electronic State**: $Fe^{2+}$ has a $d^6$ configuration.
2. **Ligand Field**: $CN^-$ is a very strong field ligand (High splitting, $\Delta_o >> P$).
3. **Filling Pattern**: To avoid the high energy of the $e_g$ orbitals, all six electrons fill and pair up in the lower $t_{2g}$ orbitals ($t_{2g}^6 e_g^0$).
4. **Observations**: Since all electrons are paired, there is no net magnetic moment.
5. **Conclusion**: The complex is **diamagnetic**.

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magnetic properties

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