Exam 22: Transition Metals: Biological and Medical Applications

Ingestion of mercury, which is poisonous, often is treated using chelation therapy. One agent used in this therapy is dimercaprol, which is shown below. Identify the features in the structure of this molecule that make it an effective chelation agent.

Consider two complex ions: (I) [Co(CN)₆]^3, and (II) [CoCl₆]^3. In view of the ordering of ligands in the spectrochemical series, which one of the following sets of predictions is most likely correct? Spectrochemical Series

How many d electrons are there in the octahedral complex ion, Mn(CN)₆^4?

Co(NH₃)₆^3(aq) absorbs light in the blue region of the spectrum. The color of a solution containing this ion is ________

The d_xy, d_xz, and d_yz orbitals are lower in energy than the d_z² and d_x²  _y² orbitals in an octahedral complex because these three orbitals ________

Anemia is associated with a deficiency of which element in the body?

How many unpaired spins are there in the square planar complex ion, AuCl₄^?

Which 3d orbitals have a higher energy in an octahedral field?

Why are compounds of most of the first-row transition metals colored?

Which d orbital(s) is/are lowest in energy in a tetrahedral complex?

What is the shape of the complex ion CoF₆^3?

How many unpaired electrons are there in a weak-field octahedral Co^3 complex?

The correct name for [Fe(NH₃)₄(H₂O)₂][NiCl₄] is ________

The coordination number for nickel in the compound Na₃[Ni(CN)₅] is ________

The coordination number around the Ni ion in [Co(NH₃)₆][Ni(CN)₅] is ________

Transition metals with ________ tend to form square planar complexes.

Unlike most transition metal compounds, those of scandium(III) are colorless. Why?

Oxalic acid is a dicarboxylic acid with the structure HOOCCOOH. How many coordination sites does the ion (OOCCOO)^2 have?

Which of the following metal ions could be found in both high-spin and low-spin configurations in octahedral complex ions?

What determines whether a transition metal ion is in a high-spin or a low-spin electron configuration?