Chemistry 501

Advanced Inorganic Chemistry I

University of Rhode Island

Mid Term Exam

October 28, 2008

Pfizer

1. Write the electron configurations for the following: Si4+, Si4–, Sn2+, Pt4+, Pb2+.

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2. Find all of the Russell-Saunders terms for the p3 configuration and energy order them.

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3. The boiling points for a series of metals is shown below. Based on this data, should boiling point be considered a periodic property? Why or why not?

Metal

Boiling Point (°C)

Mn

2061

Fe

2861

Co

2927

Ni

2913

Cu

2562

Zn

907

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4. For the following compounds, draw the Lewis dot structure, estimate all of the bond angles, determine the hybrid on the central atom, and give the point group: a) POCl3; b) ClO2; c) GeCl4; d) AsF5; e) OF2.

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5. Estimate the order of the boiling points for N2, NO, NO2, and NH3. Explain your reasoning.

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6. Draw the molecular orbital energy level diagram for S2. What is the bond order?

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7. Find the irreducible representations for the σ bonds in SiF2Cl2.

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8. Find the irreducible representations for the s orbitals for I, Br, and Cl in trans-IBr2Cl2. Use projection operators to find the functional form of the group orbitals and energy order all of the group orbitals.

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