Chem 107 Final Exam, Page 14 of 18 Dec 7, 2017 56. The number of bonds in the mo

Question

Chem 107 Final Exam, Page 14 of 18 Dec 7, 2017 56. The number of bonds in the molecule below is A. 2 B. 4 C. 6 D. 10 E. 15 57, The number of bonds in the molecule below is A. 2 B. 4 C. 9 E. 13 58. Which one of the following molecules has a zero dipole moment? A. SO B. SO2 c. co D. CH2Cl E. NO 59. What feature oocurs in the naming rules of covalent (molecular) compounds that distin- guishes them from other types of compounds? A. Roman numeral following the name of the first element. B. Prefixes such as mono-, di-, and tri- C. The -ide suffix in the name of the second element. D. Familiar groupings such as carbonate, chromate, ammonium, and nitrate.

Explanation / Answer

56. There are 4 pi bonds in the compound as it has two triple bond each having two pi bonds. Option B

57. There are 11 sigma bonds in the compound (5 C-C and 6 C-H bond). Option D

58. SO3 has zero dipole moment as it has trigonal planar structure which cancels net dipole moment. Option A

59. Prefix such as mono- , di- and tri- . Option B

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