Chapter 23 Test

Question 1

The highest oxidation state exhibited by zirconium is +4. Which of the following is the electron configuration for zirconium?

Answer 1

[Kr]4d25s2

Question 2

The electron configuration of manganese is [Ar]3d54s2. What is the highest oxidation state of manganese?

Answer 2

+7

Question 3

Which of the following properties is not commonly displayed by transition metals?

Answer 3

negative oxidation states

Question 4

The highest oxidation state displayed by vanadium is +5. What is the electron configuration of vanadium?

Answer 4

[Ar]3d34s2

Question 5

Hemoglobin is a protein responsible for carrying oxygen in the blood. Hemoglobin contains a coordination complex called heme (shown below), in which an iron atom (highlighted) is attached to four nitrogen atoms through coordinate covalent bonds. What type of ligand is found in heme?

Answer 5

polydentate

Question 6

Look at the ethylenediamine molecule.

Which statement about this molecule is not correct?

Answer 6

Ethylenediamine bonds through any of the four hydrogen atoms.

Question 7

Which of the following statements best define what a chelate is?

Answer 7

A chelate is a complex containing at least one polydentate ligand.

Question 8

Which statement about the coordination complex [Os(NH3 ) (N2 )Cl]+ is not correct?

Answer 8

Os has an oxidation number of 1+.

Question 9

What is the correct name for the complex ion [ Ni(CN)4 ]2−?

Answer 9

tetracyanonickelate(II) ion

Question 10

What is the formula for the neutral compound ammonium amminetrichloroplatinate(II)?

Answer 10

NH4[PtCl3(NH3 )]

Question 11

Name the neutral compound [ FeOH(H2O)5 ]Cl2.

Answer 11

pentaaquahyrdoxoiron(III) chloride

Question 12

Which statement about isomers is not correct?

Answer 12

If a molecule has a mirror plane of symmetry, it can have optical isomers.

Question 13

Which statement about these two complex ions is not correct?

Answer 13

The complex ions are both paramagnetic, exhibiting a very weak repulsion in a magnetic field.

Question 14

Take a closer look at the bonding arrangements for cobalt. Which statement about these arrangements is not correct?

Answer 14

In the neutral cobalt atom, there are a total of six valence electrons.

Question 15

Look at the energy vs. atomic number diagram.

Which statement about this diagram is not correct?

Answer 15

When electrons are removed, the energy levels for the orbitals do not change.

Question 16

What is the spectrochemical series?

Answer 16

The spectrochemical series list ligands in the order of increasing field-splitting energy.

Question 17

Which statement about ligand field theory is not correct?

Answer 17

The greater the distance between two sets of orbitals, the greater the interaction between the two orbitals’ electrons.

Question 18

Look at the bonding orbitals diagram for HF.

Which statement about these orbitals is not correct?

Answer 18

The distance between the 1s and 2p orbitals does not have a great affect on the splitting between the orbitals.

Question 19

Look at the molecular orbital diagram for an M–L (metal-ligand) molecule.

Which statement about this diagram is not correct?

Answer 19

ΔE is defined by the y-axis distance between Point B and Point E.

Question 20

Which statement about bond interactions between metals and ligands is not correct?

Answer 20

The ligand donates an electron to a metal orbital to create one new orbital—a hybrid bonding orbital.

Question 21

Which statement about metal-ligand interactions is not correct?

Answer 21

OH − is a strong field ligand because it acts as a good pi donor ligand.

Question 22

Which illustration of a Faraday balance shows a diamagnetic substance being exposed to a magnetic field?

Answer 22

The substance is repelled by the magnet; therefore, it must be diamagnetic.