Question 1

Which of the following electronic configurations can produce either high or low spin complex?

Accepted Answer

A)  d3 
B)  d5 
C)  d8 
A)  d3 
B)  d5 
C)  d8 B

Question 2

Identify the correct statement(s):
(i) Luminescent complexes radiate energy after electronic excitation by the absorption of radiation.
(ii) Phosphorescence takes place without change in multiplicity between excited and ground state.
(iii) Luminescence competes with other non-radiative decays.

Accepted Answer

A)  (i) and (iii) 
B)  All are correct 
C)  (ii) and (iii) 
A)  (i) and (iii) 
B)  All are correct 
C)  (ii) and (iii) A

Question 3

Which of the spectroscopic terms, 1G, 3F, 1D, 3P or 1S, found for d2 electronic configuration, is the ground state term?

Accepted Answer

A)  3F 
B)  1S 
C)  3P 
A)  3F 
B)  1S 
C)  3P A

Question 4

If the metal is in low oxidation state and the ligands contain empty orbitals, then:

Accepted Answer

A)  Metal-to-ligand charge-transfer transitions are observed. 
B)  Ligand-to-ligand charge-transfer transitions are observed. 
C)  Ligand-to-metal charge-transfer transitions are observed. 
A)  Metal-to-ligand charge-transfer transitions are observed. 
B)  Ligand-to-ligand charge-transfer transitions are observed. 
C)  Ligand-to-metal charge-transfer transitions are observed.

Question 5

Identify the correct statement:

Accepted Answer

A)  In an octahedral crystal field, the d orbitals are split into t2g and eg sets separated by the ligand-field splitting parameter F1F1F1S1F1F1F10O. 
B)  The triply degenerate t2g set is higher in energy than the doubly degenerate eg set in an octahedral crystal field. 
C)  The eg set of orbitals is composed of degenerate dxy and dxz atomic orbitals. 
A)  In an octahedral crystal field, the d orbitals are split into t2g and eg sets separated by the ligand-field splitting parameter F1F1F1S1F1F1F10O. 
B)  The triply degenerate t2g set is higher in energy than the doubly degenerate eg set in an octahedral crystal field. 
C)  The eg set of orbitals is composed of degenerate dxy and dxz atomic orbitals.

Question 6

The square planar geometry is preferred over tetrahedral when

Accepted Answer

A)  metal has a d8 electronic configuration with strong field ligands. 
B)  the ligands are early in the spectrochemical series. 
C)  the metal is in low oxidation state. 
A)  metal has a d8 electronic configuration with strong field ligands. 
B)  the ligands are early in the spectrochemical series. 
C)  the metal is in low oxidation state.

Question 7

Identify the correct statement(s):
(i) Ligand field theory is based on molecular orbital theory.
(ii) Ligand field theory can explain the spectrochemical series.
(iii) Ligand filed theory does not take into account the s and p atomic orbitals on the metal.

Accepted Answer

A)  (i) and (ii) 
B)  (ii) and (iii) 
C)  (i) and (iii) 
A)  (i) and (ii) 
B)  (ii) and (iii) 
C)  (i) and (iii)

Question 8

Which information can be extracted from Tanabe-Sugano diagrams if the UV-Vis spectrum is known?
(i) Racha's parameter B
(ii) value of F1F1F1S1F1F1F10O
(iii) The ground-state term for the given d-electron configuration.

Accepted Answer

A)  (i) and (ii) 
B)  (i), (ii) and (iii) 
C)  (ii) and (iii) 
A)  (i) and (ii) 
B)  (i), (ii) and (iii) 
C)  (ii) and (iii)

Question 9

What does the ligand field splitting parameter, F1F1F1S1F1F1F10O?, depend on?
(i) Ligand's position in spectrochemical series.
(ii) The colour of the complex.
(iii) The charge on the central metal atom.

Accepted Answer

A)  (i) and (ii) 
B)  (ii) and (iii) 
C)  (i) and (iii) 
A)  (i) and (ii) 
B)  (ii) and (iii) 
C)  (i) and (iii)

Question 10

Which of the following transitions are forbidden based on the spin selection rule?

Accepted Answer

A)  2Eg ← 4A2g 
B)  4T1g ← 4A2g 
C)  4T2g ← 4A2g 
A)  2Eg ← 4A2g 
B)  4T1g ← 4A2g 
C)  4T2g ← 4A2g

Which of the following electronic configurations can produce either high or low spin complex?

Identify the correct statement(s): (i) Luminescent complexes radiate energy after electronic excitation by the absorption of radiation. (ii) Phosphorescence takes place without change in multiplicity between excited and ground state. (iii) Luminescence competes with other non-radiative decays.

Which of the spectroscopic terms, ¹G, ³F, ¹D, ³P or ¹S, found for d² electronic configuration, is the ground state term?

If the metal is in low oxidation state and the ligands contain empty orbitals, then:

Identify the correct statement:

The square planar geometry is preferred over tetrahedral when

Identify the correct statement(s): (i) Ligand field theory is based on molecular orbital theory. (ii) Ligand field theory can explain the spectrochemical series. (iii) Ligand filed theory does not take into account the s and p atomic orbitals on the metal.

Which information can be extracted from Tanabe-Sugano diagrams if the UV-Vis spectrum is known? (i) Racha's parameter B (ii) value of _O (iii) The ground-state term for the given d-electron configuration.

What does the ligand field splitting parameter, _O_?, depend on? (i) Ligand's position in spectrochemical series. (ii) The colour of the complex. (iii) The charge on the central metal atom.

Which of the following transitions are forbidden based on the spin selection rule?

Atomic Structure

Molecular Structure and Bonding

Molecular Symmetry

The Structures of Simple Solids

Acids and Bases

Oxidation and Reduction

An Introduction to Coordination Compounds

Physical Techniques in Inorganic Chemistry

Periodic Trends

Hydrogen

The Group 1 Elements

The Group 2 Elements

The Group 13 Elements

The Group 14 Elements

The Group 15 Elements

The Group 16 Elements

The Group 17 Elements

The Group 18 Elements

The D-Block Elements

Coordination Chemistry: Reactions of Complexes

D-Metal Organometallic Chemistry

The F-Block Metals

Materials Chemistry and Nanomaterials

Green Chemistry

Biological Inorganic Chemistry

Inorganic Chemistry in Medicine

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Exam 20: The D-Metal Complexes: Electronic Structure and Spectra

Which of the following electronic configurations can produce either high or low spin complex?

Identify the correct statement(s): (i) Luminescent complexes radiate energy after electronic excitation by the absorption of radiation. (ii) Phosphorescence takes place without change in multiplicity between excited and ground state. (iii) Luminescence competes with other non-radiative decays.

Which of the spectroscopic terms, 1G, 3F, 1D, 3P or 1S, found for d2 electronic configuration, is the ground state term?

If the metal is in low oxidation state and the ligands contain empty orbitals, then:

Identify the correct statement:

The square planar geometry is preferred over tetrahedral when

Identify the correct statement(s): (i) Ligand field theory is based on molecular orbital theory. (ii) Ligand field theory can explain the spectrochemical series. (iii) Ligand filed theory does not take into account the s and p atomic orbitals on the metal.

Which information can be extracted from Tanabe-Sugano diagrams if the UV-Vis spectrum is known? (i) Racha's parameter B (ii) value of O (iii) The ground-state term for the given d-electron configuration.

What does the ligand field splitting parameter, O?, depend on? (i) Ligand's position in spectrochemical series. (ii) The colour of the complex. (iii) The charge on the central metal atom.

Which of the following transitions are forbidden based on the spin selection rule?

Atomic Structure

Molecular Structure and Bonding

Molecular Symmetry

The Structures of Simple Solids

Acids and Bases

Oxidation and Reduction

An Introduction to Coordination Compounds

Physical Techniques in Inorganic Chemistry

Periodic Trends

Hydrogen

The Group 1 Elements

The Group 2 Elements

The Group 13 Elements

The Group 14 Elements

The Group 15 Elements

The Group 16 Elements

The Group 17 Elements

The Group 18 Elements

The D-Block Elements

Coordination Chemistry: Reactions of Complexes

D-Metal Organometallic Chemistry

The F-Block Metals

Materials Chemistry and Nanomaterials

Green Chemistry

Biological Inorganic Chemistry

Inorganic Chemistry in Medicine

Filters

Which of the spectroscopic terms, ¹G, ³F, ¹D, ³P or ¹S, found for d² electronic configuration, is the ground state term?

Which information can be extracted from Tanabe-Sugano diagrams if the UV-Vis spectrum is known? (i) Racha's parameter B (ii) value of _O (iii) The ground-state term for the given d-electron configuration.

What does the ligand field splitting parameter, _O_?, depend on? (i) Ligand's position in spectrochemical series. (ii) The colour of the complex. (iii) The charge on the central metal atom.