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- II. Short Answer 1. A. CO2 В. NO2 С. NH:CI D. SO,²- E. CN Best Lewis Structure (show all electrons and bonds) has lowest FC. Show all nonzero FCs. Hybridization on central atom e geometry Molecular geometry Approx. Bond angles Polar or non-polar (don't worry about ions) Number of o bonds Number of t bonds Total lone pairs in the entire molecule Number of nonbonding electron pairs on the central atomAnswer the following questions about acetonitrile (CH;C=N:). c. In what type of orbital does the lone pair on N reside? d. Label all bonds as polar or nonpolar. a. Determine the hybridization of both C atoms and the N atom. b. Label all bonds as o or r.Predict the hybridization and geometry around each indicated atom. a. CH3-C=C-H b. CH₂CH=C=CH₂ 11
- Predict the hybridization and geometry around each highlighted atom. CI a. b. -o c. d. е. =NOCH31. How many sp^3 orbitals does your oxygen have? * 2. How many Pi bond/s connect/s your Oxygen to your Carbon? * 3. How many sigma bond/s connect/s your Oxygen to your Carbon? * 4. Which line representation would tell the viewer of which hydrogen is toward him/her (closest to the viewer)? *A. AB. BC. CD. None of the above 5. What hybrid orbital do all your central atoms have? *A. spB. sp^2C. sp^3D. spd^3 6. If we are to consider only your C-O-C, what geometry will they form? *A. tetrahedralB. trigonal pyramidalC. trigonal planarD. linearE. bent 7. What angle will be closest to the angle of number 1? *A. 180B. 109.5C. 120D. 90 8. What angle will be closest to the angle of number 2? *A. 180B. 109.5C. 120D. 90 9. How many hybrid orbitals that formed covalent bonds can you count? *1 pointA. 6B. 7C. 8D. 9E. 10F. 11 10. How many atoms were bonded covalently? *The C-N single bond (indicated by the highlighted portion) is a bond. It is formed from the overlap of orbitals on C with orbitals on N. Hint: Do not forget the implicit lone pair of electrons. sp hybrid sp2 hybrid sp3 hybrid sp3d hybrid pz unhybrid dxy unhybrid s unhybrid H sigma pi H. N С —н H. N. N Z-I
- 7. Which of the underlined atoms (C1, C2, N, and O) are sp hybridized? :OH H H-C- -C- :NH, H a. b. c. d. e. H H H C=C₂ Ci and C2 C₁, C2, N, and O N and O C₁, C2, and N none C-H HDraw in all H atoms and lone pairs in each ion. -ÑCH3 b. =NH d. a. C. OZingerone gives ginger its pungent taste. a. What is the molecular formula for zingerone? b. How many lone pairs are present? c. Draw a skeletal structure.d. How many sp2 hybridized carbons are present? e. What orbitals are used to form each indicated bond ([1]–[4])?Lewis Structures and Formal Charge
- 3. a. E,R is? b. E,S c. S,Z 4. What is the π-energy diagram of the compound in question 3? a. b. d. R,Z e. not a.-d. d. e. not a.-d.5. Answer the following questions about the molecules CH2S (C is the centralatom).a. Draw the Lewis structure.b. Write the valence shell electron configuration for C.c. Draw the valence orbital diagram for C.d. Draw the hybridized orbital diagram for C.e. Give a bond description for each bond in the molecule.Answer the following questions about amoxicillin, an antibiotic from the penicillin family. NH2 H N. HO НО amoxicillin a. Predict the hybridization and geometry around each highlighted atom. b. Label five polar bonds using the symbols &+ and &–. C. How many r bonds does amoxicillin have? Label them. d. Find a C – H bond containing a carbon atom having a hybrid orbital with 33% s-character.
