a) Write the ground state electron configuration for the Fe3+ cation. You can use the noble gas [...] notation to indicate the core electrons. Use the following format: [...] n sm b) Use the Tanabe-Sugano diagram on page 5 and identify the free ion ground state symbol (Russel-Saunders term) for Fe3+. c) Identify the octahedral ground state term symbols for Fe3+ in i) a weak octahedral ligand field and in ii) a strong octahedral ligand field. i) weak octahedral ligand field: ii) strong octahedral ligand field d) Determine the spin-only effective magnetic moment of Fe3+ in a i) weak octahedral ligand field: ii) strong octahedral ligand field You measured for the Fe3+ containing complex the following absorption peaks for d-d transitions. Table Q2. Peak Wavenumber / cm-1 1 12,500 log(s)/ dm³mol-1cm-1 0.05 Transition Notes 2 14,200 0.03 3 18,100 0.02 4 23,500 2.03 5 23,500 2.40 6 25,970 1.95 7 27,440 2.10 e) Sketch the uv-vis absorption spectrum in the diagram on page 8. The uv-vis spectrum doesn't have to be exactly to scale but needs to be conceptually correct. Use this Tanabe-Sugano diagram and determine A, for this Fe complex using the uv-vis peak data provided in table Q2. Racah parameter B = 700 cm 10 20 30 40 A₂ 3 2 L - /(3)301 40,000 30,000 18,000 ←v/cm1 60 AE 50 70 60 50 00 40 270 2F G60 E/B F 50 21 40 H F Dp "G 2 M 30 30 20 20 20- 28212 ATI 40 40 30 T₂ AL Ti -10 10 10- 6A T₂ 0 10 20 30 A/B 0 10 20 30 40 PIC⚫ f) Describe how you determined A g) Complete 'Table Q2' on page 7 by filling the column with the heading transitions with the electronic transitions (use proper notations) for each row. h) Based on the analysis of the Tanabe-Sugano diagram is this a high-spin or a low-spin complex? Explain. i) Use the spectrochemical series (see resource pages) and propose a ligand for the Fe3+ coordination compound that would likely form an octahedral complex with the spin-state you determined in Question 2 h). You need to provide a complete coordination compound with the complex written in square brackets and all necessary counter ions. j) Predict the effective magnetic moment for this octahedral Fe3+ complex in units of Bohr Magnetons. k) Determine the crystal field stabilization energy of the Fe3+ complex in units of A.. You are reducing the original octahedral Fe3+ complex to a tetrahedral Fen+ complex. This Fen+ containing tetrahedral complex has a spin-only effective magnetic moment of Heff -4.88(3)μB. 1) What is the oxidation state of the reduced iron? m) Draw the crystal field energy diagram of the tetrahedral complex. Label all d-orbitals and label the different energy levels with the proper symmetry species as used for orbitals. Indicate the tetrahedral field splitting energy in your diagram. n) Determine the crystal field stabilization energy in units of AT for this Fen+ tetrahedral complex.

Using a simple particle-in-a-box model for the multiple bonding in 1,2-butadiene (see Example 4.7) and the n=2 wave function for the weakest bound electron, calculate the probability of finding the electron in an 0.1 interval centered midway between the two inner carbon atoms (that is, the center is at x=2.11 , so this interval is from x1=2.06 to x2=2.16 ). Then calculate the probability of finding the electron in an 0.1 interval centered midway between an end carbon atom and the carbon atom that is double-bonded to it in the Lewis dot structure. (You may calculate the appropriate integrals or estimate the relevant areas under the curve graphically.) Then recalculate the probabilities by approximating the integral as |( x 0)|2x , where x0 is evaluated in the middle of the range from x1 to x2 . Finally, explain why you can’t approximate the integral needed for Problem 37(a) in this way.

Write the complete ground-state electron configuration of F-. For multi-digit superscripts or coefficients, use each number in succession. 2 3 Question 14 of 34 Tap here or pull up for additional resources 4 1s²2s²2p5 1 2 3 4 5 6 s pdf 5 • ** 6 O 7 ● 8 9 Submit Mo X

Write the electronic configuration, in spdf notation abbreviated (The short one) for: 1) Ir3+, 2)  Hg2+3) Sb3