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LUC Inorganic Chemistry Electron Density & Configuration Discussion

Loyola University of Chicago

Question Description

I’m trying to learn for my Chemistry class and I’m stuck. Can you help?

I have question about inorganic chemistry

it is about chapter 20 from the book inorganic chemistry (6 edition) chapter 20


the book link

Shriver, D. F., Weller, M. T., Overton, T., Rourke, J., & Armstrong, F. A. (2014). Inorganic chemistry. New York: W.H. Freeman and Company.


the questions are attached

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1. Draw a schematic representation of the electron density distribution in d orbitals. 2. Write the electron configuration of the first-row d-block metals. 3. Plot the variation in ionic radii across the first-row d-block for M2+ ions with CN = 6. Consult link: http://abulafia.mt.ic.ac.uk/shannon/ptable.php. 4. Plot the experimental hydration enthalpies of the di-positive ions of the Period 4 transition metals. http://pubs.acs.org/doi/pdf/10.1021/ed054p540 5. Explain the following terms: crystal-field theory, ligand-field splitting parameter, strongfield ligand, ligand-field stabilization energy, paring energy, low-spin complex, JahnTeller effect, Irving-Williams series, ligand-field theory, π-donor ligand. 6. What are the two types of charge-transfer transitions? What are the differences between them? What are the lines of evidence used to identify a band as due to a charge-transfer transition? 7. Explain the following terms: Laporte selection rule, fluorescence, phosphorescence, cooperative magnetism, spin crossover, associative mechanism. 8. What are the trans effect and steric effect on ligand substitution reaction mechanism? ...
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Final Answer

Attached.

1. Draw a schematic representation of the electron density distribution in d orbitals.

2.

Write the electron configuration of the first-row d-block metals.
Sc: 1s2 2s2 2p6 3s2 3p6 3d1 4s2
Ti: 1s2 2s2 2p6 3s2 3p6 3d2 4s2
V: 1s2 2s2 2p6 3s2 3p6 3d3 4s2
Cr: 1s2 2s2 2p6 3s2 3p6 3d5 4s1
Mn: 1s2 2s2 2p6 3s2 3p6 3d5 4s2
Fe: 1s2 2s2 2p6 3s2 3p6 3d6 4s2
Co: 1s2 2s2 2p6 3s2 3p6 3d7 4s2
Ni: 1s2 2s2 2p6 3s2 3p6 3d8 4s2
Cu: 1s2 2s2 2p6 3s2 3p6 3d10 4s1
Zn: 1s2 2s2 2p6 3s2 3p6 3d10 4s2

3. Plot the variation in ionic radii across the first-row d-block for M2+ ions with CN = 6.
Consult link: http://abulafia.mt.ic.ac.uk/shannon/ptable.php.

Ionic radii of the first-row d-block for M2+
0.9
0.85

Ionic radii

0.8
0.75

Ti2+
V2+
Cr2+
Cu2+

0.7
0.65
0.6
0.55

Ni2+

Mn2+

Co2+
Fe2+

Zn2+

4. Plot the experimental hydration enthalpies of the di-positive ions of the Period 4
transition metals. http://pubs.acs.org/doi/pdf/10.1021/ed054p540
Experimental hydration enthalpies for period 4 M2+ cations
2150
Ni2+

-ΔHhyd (expt.) (kJ/mol)

2100
2050

Zn2+

2000

Co2+

1950

Fe2+
V2+

1900
1850

Cu2+

Cr2+

Ti2+
Mn2+

1800

5. Explain the following terms: crystal-field theory, ligand-field splitting parameter, strongfield ligand, ligand-field ...

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Purdue University

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