If you could please answer the ones highlighted that would be great! Thank you :)

4. (42 pts.) For complexes with more than one electron, there can be multiple absorbtions in the UV-visible spectrum. The octahedral d case provides an illuminating example. (a) (16 pts.) Determine the possible microstates for the positive net spins on the d3 configuration in the table provided (net negative ones will just be the mirror image so they are not necessary). (b) (4 pts.) Fill in the two quartet states on the d Tanabe-Sugano diagram provided. (c) (12 pts.) Using the absorbance spectra and transition for Cr3+ provided below, find the Racah parameter (B) and 40. Hint: Your book has an example for the d case. (d) (10 pts.) Using your calculated values for B and Ao, calculate the energy for the 4A2 to 4T1 (4P) transition. Explain why your calculated energy agrees or disagrees with the spectrum provided. 20 Cr3+(D3) 24,000 cm 1 17,500 cm 15 10 5 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 cm di Tanabe-Sugano Diagram 70 ?Az 'T 60D 2A, 50 E/B 40 F! 'T 30 D ap ?H 20 *T E m 10 A2 40 b 10 20 A/B 30