8) Provide the best resonance structures of the molecules shown below. Place a circle(s) around the best resonance structure(s) for each molecule also considering the initial structure given. a) b) OH HN OH OH ↓ ↑
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- 1. Which one of the following structures is not a resonance structure of the other three structures? D) C) B) A) NH2 NH2 NH2An electrostatic potential map of calicene is shown below. a) Both the electrostatic potential map and its significant dipole moment indicate that calicene is an unusually polar hydrocarbon. Which of the dipolar resonance forms, structure A or structure B, better corresponds to the electron distribution in the molecule? Select the single best answer. b) Which one of the following structures should be stabilized by resonance to a greater extent? Select the single best answer.Draw three resonance structures for OCN–. Carbon is the central atom in this anion. Indicate all non-zero formal charges on atoms. 1) Label the best resonance structure for OCN– with the word "major". 2) Label the worst resonance structure for OCN– with the word "minor". 3) Label the third resonance structure with the word "OK."
- A) 1) One of the following four structural formulas is not a permissible resonance contributor which one? Why? на HC на a) b) NFO c) H₂C HC H.C H₂C ks 2) Using curved arrows, show the electron movement that connects the three resonance contributors. لوج شركة السار NFO9. Draw all resonance structures of the following compounds. Show electron-pushing arrows.Select the single best answer. For the following molecule, indicate the positive and negative ends of the dipole, using the symbol →→→→. Refer to a table of the Pauling electronegativity scale as needed. HF The arrow points to the left. The arrow points to the right.
- Specify whether the two structures are resonance contributors to the same resonance hybrid. Be sure to explain your reasoning. If yes, be sure to specify which is preferred and why. H2C=NH2Write an equation for the reaction of CH3 SCH3 with BF3, a Lewis acid, and show by the use of curved arrows how the reaction occurs. • Show all hydrogen atoms that are not attached to a carbon atom. Apply formal charges where appropriate. Assign lone pairs and radical electrons where appropriate. • Use the "starting points" menu to revert to the original molecule(s) shown. • Draw the appropriate electron-flow arrows. • Omit+ signs between structures. ● ● CH3 | :S: | CH3 == starting points == ↑ TAYY : F کر ? ChemDoodleⓇBased on the arrows already drawn, draw the resonance structures (making sure to include any charges), and highlight which structure is most important/present for each molecule صدار H N [2 I ]
- Decide whether each row is a set of resonance structures for a single molecule and select "yes" or "no" in the last column. CN CN structures CN ( CN resonance structures? yes O no yes O noDraw a second resonance form for the structure shown below. ö: H3C-N :ö:For each of the following compounds, 1. draw the Lewis structure. 2. show how the bond dipole moments (and those of any nonbonding pairs of electrons) contribute to the molecular dipole moment. 3. estimate whether the compound will have a large, small, or zero dipole moment.