[CO(NH3)6]3(+) isa low spin complex while [CoF6]3(-) is a high spin complex. Explain this is for M.Sc.-II?

"It's fairly easy don't worry. No need for d level splitting diagrams to answer this since we're dealing with N and F: use the spectrochemical series to make an assumption about the ligand. The difference in t2g and eg levels (?o) determines whether a complex is low or high spin. If both ligands were the same, we would have to look at the oxidation state of the ligand in the complex. Halides < Oxygen ligands < Nitrogen ligands < CN- ligands ALWAYS HIGH SPIN --------------- ALWAYS LOW SPIN If ?o > P, then a complex is low spin. IF ?o < P the complex is high spin."