multiple choices in organic chemistry

1. Which of the following is trigonal planar?A. boron trifluoride, BF3B. methyl anion, CH3?C. methane, CH4D. ammonia, NH32. Which atomic orbitals overlap to form the C=O bond of 2-propanone?A. C sp3 + O sp2B. C sp2 + O pC. C sp2 + O sp2D. C sp3 + O spDraw these orbitals here:3. Which of the following resonance structures makes the largest contribution to the structure of [H2CCHO]-? Explain.A. 1B. 2C. 3D. 4Explain here:4. Identify the condensed formula of the following structure:A. (CH3)2CHCHClCH(CH3)2B. CH3CH(CH3)CHClCH(CH3)2C. (CH3)2CHCHClC(CH3)3D. (CH3)3CCHClCH(CH3)35. The most stable resonance contributor of this would be:A. AB. BC. CD. DShow all resonance structures and provide explanation for the major contributor:6. Does the equilibrium of this reaction lie to the left or right? Explain.A)LeftB)RightC)It cannot be determined.D)The forward and reverse reactions are equally favored.Provide explanations here:7. What should go in the box on the right side of the equation? Show work indicating the direction of equilibrium of the reaction.A)AB)BC)CD)DE)EShow work here:8. Rank the following from the weakest to the strongest base.A)OH– < Cl– < NH2–B)Cl– <  NH2–  < OH–C)NH2– <  OH– < Cl–D)Cl– <  OH– < NH2–E)NH2– < Cl– < OH–