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![Sketch a fully labelled energy
level diagram for [Cr(H2O)6]3+,
showing the d-orbitals and how
they are occupied by electrons.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd4ee1ac9-f293-4706-a3a6-f1b5d6024689%2Fda341f75-f834-47b9-9474-c603f6a90d2f%2F349pie_processed.jpeg&w=3840&q=75)
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- Platinum(II) forms many complexes, among them those with the following ligands. Give the formula and charge of each complex. (a) two ammonia molecules and one oxalate ion (C2O42-) (b) two ammonia molecules, one thiocyanate ion (SCN-), and one bromide ion (c) one ethylenediamine molecule and two nitrite ionsThe self exchange electron-transfer reaction between [Co(en)3]3+ and [Co(en)3]2+ is rather slow. Explain this observation on the basis of d-orbital occupations.[Cr(H2O)5Br]2+
- How many sigma bonds are present in [Ti(H2O)6]³+?How many unpaired electrons would you expect for chromium in [Cr(H2O)6]3+? Is this a paramagnetic or diamagnetic material?The orbital occupancies for the d orbitals of several com-plex ions are diagrammed below. (a) Which diagram corresponds to the orbital occupancy of thecobalt ion in [Co(CN)₆]³⁻? (b) If diagram D depicts the orbital occupancy of the cobalt ionin [CoF₆]ⁿ, what is the value of n? (c) [NiCl₄]²⁻ is paramagnetic and [Ni(CN)₄]²⁻ is diamagnetic.Which diagrams correspond to the orbital occupancies of thenickel ions in these species? (d) Diagram C shows the orbital occupancy of V²⁺ in the octa-hedral complex VL₆. Can you determine whether L is a strong-or weak-field ligand? Explain.
- Would you expect [Co(CN)6] 3- to be a powerful or weak oxidizing agent? Explain.Draw the octahedral crystal field d orbital splitting diagrams for [Fe(OH2)6] 2+ and [Fe(CN)6] 3. Indicate if the diagrams are high spin and low spin. give the names of the d-orbitals (dxz, dxy, dzy, dz2, dx2 - y2) label the appropriate orbital sets eg* and t2g and show how the electrons populate the diagram. (Hint: Pairing energy for 3d orbitals Fe 2+ = 29875 cm-1, Fe 3+ = 19150 cm-1; delta OH for Fe(OH2)6]2+ = 14300 cm-1 and delta OH for [Fe(CN)6]3 - is 35000 cm-1When water ligands in [Ti(H2O)6]3+ are replaced by CN- ligands to give [Ti(CN)6]3-, the maximum absorption shifts from 500 nm to 450 nm. Is this shift in the expected direction? Explain.
