finalexam_sample

finalexam_sample - Student Name: CHEM 131 Inorganic...

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1 Student Name: Student ID: CHEM 131 Inorganic Chemistry I (Final Exam sample paper) Part I: Multiple Choices (2 points each, 50 points in total) 1. For a cube, the number of C 6 , C 4 , and C 3 rotational axes is (a) 1, 3, and 4, respectively (b) 0, 2, and 4, respectively (c) 0, 3, and 4, respectively 2. The CO diatomic molecule contains infinite number of (a) σ v (b) i (c) σ h (d) C 2 3. Identify the wrong lablel(s) in the following list used for representations of point groups. C 1000 , C 10h , D 100h , D 2v , C i , I, O i , T d 4. The Fe 2 (CO) 9 molecule shown does not posses what element of symmetry? (a) i (b) σ (c) S 3 (d) C 2 5. A molecule having a point group of D 4h contains all the symmetry elements of a molecule having a point group of (a) D 4d (b) D 2d (c) D 3h (d) none of the above 6. How many mirror planes of symmetry are there in an icosahedron? (a) 6 (b) 9 (c) 12 (d) 15 (e) 18 7. Give the symmetry label for the molecular orbital associated with a trigonal planar structure ( you are given a character table for D 3h ). (a) A 1 ' (b) A 1 " (c) A 2 ' (d) A 2 " 8. Identify the stronger acid? H 2 Se vs. H 2 S [Al(H 2 O) 6 ] 3+ vs. [Fe(H 2 O) 6 ] 3+ 9. Which one in the following is the least stable? (a) [Al(H 2 O) 6 ] 3+ (b) [AlF 6 ] 3- (c) Mo(H 2 O) 6 (d) Mo(CO) 6 10. Predict which way the following reactions will go (left or right) (a) [AlF 6 ] 3+ + Ga(CN) 6 ] 3+ b [GaF 6 ] 3+ + Al(CN) 6 ] 3+ (a) W(CO) 5 (PMe 3 ) + NMe 3 b W(CO) 5 (NMe 3 ) + PMe 3 11. Select the strongest base toward proton. (a) NH
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finalexam_sample - Student Name: CHEM 131 Inorganic...

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