Why is a solution of CuSO47. If one [CuL62+o
] solution is blue and another is green, which would be expected to have the higher value of Δ?
8. Chromium(II) fluoride and manganese(II) fluoride both have a central metal ion surrounded by 6 fluoride
ligands. The Mn-F bond lengths are equidistant, but four of the Cr-F distances are longer than the
other two Cr-F bonds. Explain this observation.
9. Solid CrF3 contains a Cr(III) ion surrounded by six F- ions in an octahedral geometry, all at distances of 190pm.
However, MnF3 has a distorted geometry with Mn-F distances of 179, 191, and 209pm (two of each).
Suggest an explanation.
10. When visible light passes through a solution of nickel(II) sulfate, a green solution results. What is the
HOMO/LUMO transition responsible for this color? Would you expect a Jahn-Teller distortion for this complex?
Explain these step by step. I'm a beginner.
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