Coordination Chemistry Mock Tests

The Tanabe-Sugano diagram for a d³ octahedral complex shows the ground state term as ⁴A₂g. The first spin-allowed electronic transition corresponds to:

Which of the following coordination complexes exhibits the strongest Jahn-Teller distortion in an octahedral geometry? (Consider the electronic configurations and the degeneracy of the ground state in each case.)

Which of the following is the correct order of magnetic moments for the given complexes? (All involve Fe ions)

The transition metal complex [Co(en)₃]³⁺ is chiral and exists as Δ and Λ enantiomers. The "Δ" (delta) designation refers to:

What is the spin-only magnetic moment (in Bohr magnetons, μ_B) of the complex ion [Fe(CN)₆]³⁻? (Use the formula μ = √[n(n+2)] μ_B, where n is the number of unpaired electrons. Consider that CN⁻ is a strong-field ligand and Fe is in the +3 oxidation state.)

The number of unpaired electrons in the complex ion [CoF₆]³⁻ is:

Using Tanabe-Sugano diagrams for d² octahedral complexes, the ground state term symbol for a d² ion in an octahedral field is ³T₁g(F). As the ligand field strength (Δ₀ or 10Dq) increases, the first spin-allowed electronic transition corresponds to which excited state? (The Tanabe-Sugano diagram for d² shows the energy levels as a function of Δ₀/B, where B is the Racah parameter.)

The cis-isomer of [Co(en)₂Cl₂]⁺ (where en = ethylenediamine) is chiral and optically active. The trans-isomer is: