803 Outline and Problems:
  • Write all answers in your bound journal
  • Make it NEAT and in COMPLETE SENTENCES, clearly identify which section you are working (using numbers)
  • Box final answers if doing math.
  • -4pt if you do not title and date the entry
  • -1pt (per infraction) if you do not clearly identify the sections, or number the problems

 
Section 5 (33pts)
 
  1. What are the five procedures for determining Lewis structures?
  2. Draw the Lewis structure for phosphorous trichloride.
  3. Draw the lewis structure of CH2CL2.
  4. Draw the Lewis structure for Hydrocyanic acid.
  5. What is formal charge?
  6. What are the two steps for determing the formal charge?
  7. What is the formal charge of CN- (illustrate with the Lewis structure)?
  8. How does the formal charge determine the dominant Lewis structure of a molecule?
  9. Diagram the Lewis dot structure of carbon dioxide two different ways (like the bottom of page 307).
  10. What are the two guidelines for determing the dominant Lewis structure?
  11. Which of the two Lewis structures for carbon dioxide is dominant and why?
  12. What are three posssible Lewis structures for a thiocyanate ion NCS- and which one is dominant?

 
Section 6 (25pts)
 
  1. Draw ozone 2 different ways.
  2. What is the bond length between the Oxygen molecules in ozone?
  3. What is a resonance structure?
  4. Explain resonance with the paint analogy.
  5. Draw the resonance structure of a nitrate ion.
  6. Draw a resonance structure of benzene.