351 C1 - Show all the atoms bonds and lone pairs N H O 9...

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Chemistry 351 Spring 2007 Chapter 1 problems 1. The atomic symbol of the most common isotope of carbon is 12 C. a. Please give the isotopic mass and the number of protons and neutrons of carbon-12. b. Write the electron configuration of carbon-12. 2. Draw Lewis dot structures for NH 3 and +CH 3 . Does each atom have a full octet of electrons around it? 3. Draw a Lewis dot structure for each of the following compounds: CCl 4 CH 3 NH 2 CH 3 CN CH 3 CH 2 OH CH 2 O 4. Draw a Lewis dot structure for each of the following ions: + CH 2 NH 2 CH 3 NH 3 + CH 3 NH -
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5. Add correct formal charges to the Lewis structures below. H 3 C C N CH 3 N H 3 C C N CH 3 N H 3 C C N CH 3 N H H 3 C C N CH 3 N H H H 3 C C N CH 3 N H 3 C C N CH 3 N H H A B C D E F H 6. Which of the compounds in problem 5 are constitutional isomers? Which are resonance structures? 7. Draw another valid resonance structure for the ion given below. Which structure contributes more to what the ion is really like? CH 3 CHOH 8. Draw the full structural representation of the following molecule shown in line notation.
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Unformatted text preview: Show all the atoms, bonds, and lone pairs. N H O 9. Circle the molecules below that are polar. Show the direction of polarization. CH 4 CH 3 Cl CH 2 Cl 2 CHCl 3 CCl 4 10. Redraw the compound below using three-dimensional wedge-and-dash notation. Clearly indicate the molecular geometry around each carbon and nitrogen. H 3 C C N CH 3 N H H 11. For the following reaction: + F B F F H 3 CH 2 C O CH 2 CH 3 (a) Provide a structure for the product(s) that is (are) indicated by the curved arrows. Be sure to include any formal charge(s) present (b) This may be considered an acid-base reaction. Label each of the starting materials in the scheme above as Lewis or Bronsted-Lowry, acid or base, as appropriate. (c) This may also be considered a reaction of an electrophile with a nucleophile. Label each of the starting materials in the scheme above as an electrophile or nucleophile....
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351 C1 - Show all the atoms bonds and lone pairs N H O 9...

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