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Answer the following about the coordination compound.
[Fe(CN)₆]⁴⁻ is a coordination complex ion. (1) Calculate the oxidation number of iron in the…
$[\text{Fe}(\text{CN})_6]^{4-}$ is a coordination complex ion.
(1) Calculate the oxidation number of iron in the complex.
(2) Is the complex ion diamagnetic or paramagnetic?
(3) What is the hybridisation state of the central metal atom?
(4) Write the IUPAC name of the complex ion.
Answer
Answer
| IUPAC name | hexacyanidoferrate(II) |
| Oxidation state | 2 |
| Hybridisation | d2sp3 |
| Magnetic behaviour | diamagnetic |
(1) $x + 6(-1) = -4$, so iron is $+2$ ($3d^6$). (2) $\mathrm{CN^-}$ is a strong field ligand, so the electrons pair up: no unpaired electrons, diamagnetic. (3) $\mathrm{d^2sp^3}$ (inner orbital, octahedral). (4) Hexacyanidoferrate(II) ion.