Here are some crystal field representations of d electrons in an octahedral complex: I) II) III) IV) V) Choose the representation that fits the transition metal atom in the following species: -K₄Fe(CN)₆ A)representation I B)representation II C)representation III D)representation IV E)representation V

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The complex contains Fe, which is a transition metal ion with 6 d electrons. Representation II shows the splitting of the d orbitals in an octahedral field, with 4 orbitals (dxy, dxz, dyz, and dz^2) being lower in energy and 2 orbitals (dx^2-y^2 and xy) being higher in energy. This matches the expected arrangement of d electrons in an octahedral complex with a high-spin Fe(II) ion. The other representations show different arrangements of the d orbitals and are not appropriate for this complex.

Here Are Some Crystal Field Representations of D Electrons in an Octahedral