A. CH4 B. C3H6 C. C6H6 D. C8H8 E. None of the above 2. Which of the following does NOT a have a C3 axis as its symmetry element? A. CH4 B. C3H6 C. C6H6 D. C8H8 E. None of the above 3. Which compound have the least number of symmetry elements in its structure? A. CH4 B. C3H6 C. C6H6 D. CgHg E. None of the above 4. Which compound is expected to have the least number of molecular orbitals in its MO diagram? A. CH4 B. C3H6 C. C6H6 D. CgHg E. None of the above 5. Which of the following does NOT have the correct assignment according to its Schoenflies poin classification? A. CH4 :Td B. C3H6 : D3h C. C6H6 : D6h D. CgHg : D4h E. None of the above

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