Which of the following cannot be a bidentate ligand?

1. Draw two possible resonance structures for DMSO, where S is the central atom. What kind of bond exists beetween the S and O in DMSO?  2. Based upon these resonance structures, explain how DMSO can behave as an ambidentate ligand.

According to the theory of molecular orbitals, how are ligands classified and what effect do they have on the value of the octahedral field?

Match the orbitals below to the higher and lower energy levels when an octahedral complex undergoes ligand field splitting. dx2-y2 Orbital 1 Orbital 1 Orbital 2 Orbital 3 Orbital 4 Orbital 5 L d₂2 Orbital 2 L dyz Orbital 3 dxz Orbital 4 [Choose] ◊ [Choose] ↑ [Choose] ◊ [Choose] [Choose] ↑ L dxy Orbital 5

Three complex ions of cobalt(III), [Co(CN),]?-, [Co(NH;),]*, and (CoF, absorb light at wavelengths of (in no particular order) 290 nm, 440 nm, and 770 nm. Match each complex ion to the appropriate wavelength absorbed. What color would you expect each solution to be?