Question

e. Tee die de u n C-N DUMU uisthus Uryan Jan C mor ecule is nonlinear. Of all the resonance structures you drew for this molecule, which is the most important? 16. Represent the bonding in each molecule or ion by drawing the orbitals (hybridized and unhybrid- ized) of each atom in the bond. Label the o and it bonds and label each bond by the orbitals that it is made from. For instance, the C-H bond in CH, would be made from the overlap of: C (spy) - H (1 s). You may draw the hybridized sigma orbitals as sticks and the unhybridized p-orbitals as lobes for clairity and ease. a. HONO b. CHCCH c. C,H, d. C₂0? 17. Represent each of the following species by a Lewis structure and by the modified molecular or- bital theory configuration showing a bond electrons (e.g. first use VBT (hybridization) to set up a skeletal structure for your molecule, then use MO theory to deal with the unhybridized p orbit- als). a. O b .NO, C. CH.CO, d. CH CHCHCH . SO, 18. Explain why it is possible to avoid the concept of resonance by using molecular orbital theory. (19. In which of the following species would you expect to find delocalized molecular orbitals? V a. CH 6. CO² C. CH d. H₂CO e. C₂0? 20. Use the localized electron model combined with the molecular orbital model to describe the bonding for the molecule benzoic acid, CH.COOH. Homework Sets xxix

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Answer 1

sp2 V. c the V l . sp HONO E H-o-N orsp- é configuration at N = 28² 263 There are Totul 4 orbital in valence all (18+3P ortitals) = 10 In lom 26 2fy ly la 18 & 2P crtituls Tuks pant in Hybridization and results 3 sp2 hybrid reostital and on Portitul remains on hybrich Conneputns as ar SP² a untytridized orbital Obercuping refusantantion الان و or Un hybridized Sps 142 P-PF-fond o ntybridized spet te sp P SPP DE sp q sper Ħ fond gospz SP S-SP o fone -P a bond O bond o fond

② erg c cn -c=c-H H. g p aritation sp hybridred contens has aspłybridered and 2 on hybridhred p-orbited rst onlynidrid order laping for fand formation S-ortital ) اسمانی I A Sp-s o-fen sp3 spl sp sp, s-Sp3 o-bend (PP T-benar bend PP Abend a S-arbitart spessore Il-Priforels - net s-sps T spesp ofad H ofre a spus ofern Sp-sp obud

& Cathy chc =(-H pa Inhybridized 0 4) of @fo (d) Gou - Tag all sp² hybrid aton huy on onhybridized p- orbital for it fudog and de localization a in hybridized's probertad