Draw the skeletal (line-bond) structure of (S)-5-chloro-2- methylnon-3-yne. Use a dash or wedge bond to indicate stereochemistry of substituents on asymmetric centers, where applicable.

Provide an IUPAC name for each of the compounds shown. (Specify (E)/(Z) stereochemistry, if relevant, for straight chain alkenes only. Pay attention to commas, dashes, etc.) CH3 CH3 ČH3 Br, CH3 C=C H H2C-CH2

10. Which of the following compounds is 2-methyl-3-(1-methylethyl)hexane? CH3 CH₂-CH-CH-CH₂-CH₂-CH₂ CH-CH3 CH3 CH3 CH₂-CH-CH-CH₂-CH₂-CH₂ CH-CH₂-CH₂ CH3 CH₂ (d) (a) 4-methylnaphthalene (b) 2-methylnaphthalene (c) 1-methylnaphthalene (d) 2,3-benzenetoluene CH3 CHy-CH-CH-CH, CH, CH-CH₂ CH3 11. What is the best name for the following compound? O CH3 CH3 CH3-CH-C-CH, CH, CH3 CH₂-CH3 12. Which of the following symbols is normally used to represent an alpha particle? (a) 'p (b) "He (c) je (d) 4A (e) +je

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