Chemistry20181.5 marksCoordination complexCoordination CompoundsTool: Coordination complex analyser

Answer the following about the coordination compound.

For the complex ion [Fe(CN)₆]³⁻, state: (i) the type of hybridisation. (ii) the magnetic behaviour…

For the complex ion $[\text{Fe}(\text{CN})_6]^{3-}$, state: (i) the type of hybridisation. (ii) the magnetic behaviour. (iii) the oxidation number of the central metal atom.

Open in the Coordination complex analyser

Answer


Oxidation state	3
Hybridisation	d2sp3
Magnetic behaviour	paramagnetic

(i) $d^2sp^3$ hybridisation (inner orbital, octahedral complex). (ii) Paramagnetic, because $\mathrm{Fe^{3+}}$ ($3d^5$) has one unpaired electron with the strong field ligand $\mathrm{CN^-}$ (low spin). (iii) Oxidation number of Fe = +3.