fall05org1q1

fall05org1q1 - 11-15 Draw Lewis structures(lines for bonds...

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Quiz #1 Ch 1-3 Fall 05 (20 questions for 20 points) N a m e If you do NOT want your graded quiz placed in the box outside my office, then please check here (1-10) Are True or False. 1) The Periodic Table has the elements arranged in the order they were discovered 2) A σ bond is a covalent bond 3) A π bond is an ionic bond 4) Carbon is more electronegative than fluorine 5) For substituted cyclohexanes, the bulkiest substituent prefers to go equatorial to minimize steric interactions 6) The electron configuration of Boron is 1s 2 2s 2 2p 1 7) Carbon has 6 total electrons but only 4 valence electrons 8) sp 2 hybrid orbitals give rise to bond angles of 109.5° 9) An sp hybridized atom has two unhybridized p orbitals 10) Cyclobutane has zero ring strain
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Unformatted text preview: 11-15) Draw Lewis structures (lines for bonds, dots for lone pairs of electrons) for: 11) B(OH) 3 12) CH 2 =CHCH 2 CH 2 OH Fall05org1q1 Page1 13) NH 3 14) HO O 15) CH 3 CH 2 CH 2 N(CH 3 ) 2 16) Which element has the electronic configuration 1s 2 2s 2 2p 6 3s 2 ? 17) Even though F is more electronegative than Br, Bromide (Br-) is more stable than Fluoride (F-). Why? 18-19) For the below reaction of water with hydrogen bromide: 18) Label the acid and base. 19) Circle the nucleophile in this reaction. H 2 O + H-Br → H 3 O + + Br-20) State the definition of a Lewis Base. * BONUS QUESTION for 1 extra point * Which has more angle strain : a cyclohexane chair or a cyclohexane boat conformation? Fall05org1q1 Page2...
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fall05org1q1 - 11-15 Draw Lewis structures(lines for bonds...

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