Chapter 2.9, Problem 17ATS

Two major contributing resonance structures are possible for the anion shown. One is given, but is incomplete. Complete the given structure by adding non-bonding electrons and formal charges. Draw the remaining structure, including non-bonding electrons and formal charges. Omit curved arrows. Draw formal charges and lone pairs to structure 1. H H H I. с | H H Complete structure 2. Add the pi bond, lone pairs and charges. H H H 1. A | 1 H H H

3. Refer to the drawings below for this question about resonance. vul Compound A a. Draw all relevant resonance structures (i.e. all of the resonance structures that will contribute to the overall "look" of the molecule) for both Compound A and Compound B. conua וה Compound B

2. Consider the resonance structures below may only A C. yongary] B C D a. On each structure (A-D) show all lone pair electrons. b. Provide arrows that show electron movement from A to B, B to C, and C to D. Which is the "most contributing” resonance form (A, B, C, or D)? Explain your choice. d. Draw the resonance hybrid for this molecule (use “delta” 8+ or - to show partial charges).

) Draw a Lewis structure the molecule or ion below. Draw any resonance structures.  Determine the formal charges on atoms in each of your resonance structures. Based on this, determine which resonance structure(s) are most important.  Circle the most important contributor(s) to the resonance hybrid.  If they are all equivalent, circle them all. COFCl

17. a For the following species, draw two valid resonance structure(s). HINT: Draw in lone pairs. H Resonance Structure 1 Resonance Structure 2 b. Draw in arrows on the structures above to show how you got from the original resonance structure to your structure. c. Compare the resonance structures and rank all three structures (circle the appropriate structure). Explain why on the line provided #1(Original, RS 1, RS 2), #2(Original, RS 1, RS 2), # 3 (Original, RS 1, RS 2), 18. What type of bonds hold organic molecules together? How are they different than the bonds that hold inorganic molecules together? Be specific, I want more than just names of bonds. 19. For the following molecule draw in all the dipole moments using 8+ and 8-. :O: H 20. BONUS Why can an sp³ hybridized carbon not form a double bond?

1. For each molecule in questions la - 1 do the following: 1. assign any formal charges that are needed NOTE: in all structures all lone pair electrons, bonds and atoms are shown. 2. draw out the most likely resonance structures 3. circle the structure (or structures) that is (or are) the major resonance contributor(s): 1a. 1b. H •N= H :0: H H N-H H

3. One curved arrow shows the movement of an electron pair. o a bond (sigma or pi) involves two electrons, so each curved arrow indicates some change in bonding. Step 6: When a curved arrow starts from a o bond and points to a distant atom, the o bond breaks and a new o bond is formed. A -B A-C B* B-C A* or Note that two possible cations can be formed, depending on whether the electrons from the o bond move with atom A or B. Draw curved arrows to form the products shown. Select Draw Rings More Erase Al H. -0: + AIH, H - Al -H étv 0 hulu MacBook Pro GSearch or type URL & 5 7 T Y * 00

Draw the Lewis structure of the missing reactant. Make sure to include lone pairs and non-zero formal charges. HCl CH,CH,CO,H + CI CT Click and drag to start drawing a structure.

I got this marked wrong on an assignment, but I'm not sure why. Please help me find the correct resonance structure.