Chemistry 417-01 Inorganic Chemistry Exam 2 October 29, 2001 ...

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2. (a) Draw a molecular orbital diagram for H 2.(b) Label the orbitals with the proper symmetry label (σ or π) and label any non-bonding and antibondingorbitals.(c) What is the point group of H 2?(d) Sketch the atomic and molecular orbitals as part of your diagram.(e) Using the MO diagram for H 2, interact two H 2fragments to make tetrahedral H 4. You shouldconsider tetrahedral H 4to be formed by the approach of 2 H 2fragments perpendicular to oneanother as shown in the drawings below. Arrange your coordinate system as you like.approach at 90° angletetrahedral H 4HHH(f) Label the MO’s of H 4 in order of increasing energy φ 1, φ 2, φ 3, φ 4.(g) Sketch the shape of these four MO's.(h) How many nodes does each orbital have?(i) Are any of the orbitals degenerate in energy? If so, which ones?(j) What is the point group of tetrahedral H 4?HHHHH6
3. Give a clear well-labeled molecular orbital diagram for the HCl molecule. Pay attentionto the relative energies of the orbitals used to make the diagram. Valence orbital energy levels aregiven at the end of the exam. Include pictures of all orbitals (atomic and molecular).7
Page 1 and 2: Chemistry 417-01Inorganic Chemistry
Page 3 and 4: d. Which of each pair is the strong
Page 5: Longer questions1. Consider the fol
Page 9 and 10: Valence orbital potential energies:

Chemistry 417-01 Inorganic Chemistry Exam 2 October 29, 2001 ...

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