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					Honors Chemistry                                              Name________________________________
Chemical Bonding

   1. Draw the Lewis dot diagrams for the following atoms.

      a. Hydrogen          b. Oxygen         c. Fluorine          d. Phosphorous            e. Aluminum




   2. Based on electronegativity trends, complete the chart below.

                                                           Degree of Polarity (check one)
                                                                                                    The "more
                                                                slightly   moderately   extremely   negative"
                                 Bond Type         Nonpolar
                                                                 polar       polar        polar      atom if
                                                                                                      polar
           a      H–O

           b     As – Cl

           c     Cs – N

           d      O–O

           e      O–F

           f     Na – Br

           g       S8

           h      S – Cl

           i       P–F

           j        I2

   3. For each of the following properties, indicate if the compound’s bond type is ionic (I),
      covalent (C), or unable to be determined (X).

               a. melts at 150 oC ___________                 b. conducts a current in solution _________

               c. solid at 100 oC ____________                d. boils at 15 oC ________________

               e. liquid at room temp __________              f. solid does not conduct a current _________

               g. linear molecule ____________                h. cubic crystal __________________
                                                                                              2
4. Draw the Lewis dot diagram and chemical formula for the compounds formed when the following
   elements ionically bond.

          a. barium and fluorine                    b. sodium and oxygen




          c. aluminum and nitrogen                  d. calcium and phosphorus




          e. strontium and sulfur                   f. magnesium and arsenic




5. How many covalent bonds will each of the following nonmetals likely make?

          a. N ______           b. O ______         c. H ______          d. Ne ______

          e. Cl ______          f. As ______        g. C ______          h. B ______

          i. Si ______          j. P ______         k. Br ______         l. F ______
                                                                                                  3
6. Complete the table below for the indicated covalently bonded compounds.
               Total                                                                  Total
                                                               Number
             Number                                                      Number    Number of
                                                                 of
                of                Lewis Dot Diagram                      of Lone   electrons in
                                                               Bonding
             Valence                                                      pairs        Dot
                                                                Pairs
             Electrons                                                              Diagram




     PH3




     SiCl4




      O2




      Cl2




Continued on next page
                                                                         4
        Total                                                Total
                                      Number
      Number                                    Number    Number of
                                        of
         of       Lewis Dot Diagram             of Lone   electrons in
                                      Bonding
      Valence                                    pairs        Dot
                                       Pairs
      Electrons                                            Diagram




N2




CS2




HF




SO2
                                                                                                5
7. Draw Lewis structures for the following compounds using lines for bonds. Remember to count
   valence electrons and confirm that all are present in the completed structure.

                          SO3                                          SO3-2




                          CO2                                           CO




                         CO3-2                                        H2CO3




                          PO4-3                                        NO3-




                          NO+                                         HNO2




8. For each structure drawn above in #7 indicate which bonds are coordinate covalent bonds.
                                                                                            6
9. Draw all of the possible resonance structures for the following compounds.

                                                 NO2-




                                                  O3




                                                 SeO2




                                                N2O4
             (each nitrogen atom is bonded to two oxygen atoms and to the other nitrogen)
                                                                                             7
10. Complete the table below using the VSEPR theory. The Lewis structure for each of these
    compounds was drawn in a previous question.
                      Structural Formula           electron                     molecular
                                                                bond angle
                   (drawn to proper shape)        geometry                      geometry



      PH3




     SiCl4




       N2




      CS2




      SO2




     CO3-2




     PO4-3




      NO2-




       O3
                                                                                         8
11. Complete the following table:
                                                          Electron   Bond    Molecular
                   Lewis Structure   Structural Formula
                                                          Geometry   angle   Geometry




     NBr3




    CH3Cl




     ClO2-




     TeO3




Continued on next page
                                                                              9

                                               Electron   Bond    Molecular
        Lewis Structure   Structural Formula
                                               Geometry   angle   Geometry




SO4-2




SCl2




HCN




BF3
                                                                                                        10
12. Each of the following are compounds with Lewis structures drawn in previous questions. For
    each, draw the structural formula to the proper shape and indicate if it is polar or nonpolar. If
    polar, draw the arrow indicating the direction of the dipole.

                        PH3                                           SiCl4




                        CO2                                            SO2




                        SO3                                            CO




                         HF                                          CH3Cl




                        SCl2                                          NBr3
                                                                                           11
13. Complete the following table:
                                     Structural Formula     electron   bond    molecular
                   Lewis Structure
                                     (indicate polarity)   geometry    angle   geometry




       ICl




      CBr4




      AsF3




     CHF3




      BH3
                                                                                                   12
14. Draw Lewis dot diagrams for the following ionic compounds.

           a. AlP                        b. CaCl2               c. The compound containing Sr and N




15. Predict the bond type between:

           a. P – O                      b. F – F                      c. K – Br


16. Why are ionic compounds all solids at room temperature?



17. Circle the compounds listed that would not likely be soluble in water.

           CH4            NaNO3          CH3OH          CCl4           CH3F

18. Which of the compounds listed in question 17 would exist as a solid crystal at room temperature?



19. Draw the Lewis Structure for:

           a. HClO2                  b. H3PO3              c. H2SO3                d. SiO3-2




20. Which of the compounds in question 19 contain coordinate covalent bonds?
                                                                                                 13
21. Draw all of the possible resonance structures for the carbonate ion.




22. For the following covalently bonded compounds:
              Determine the total number of valence electrons
              Draw the Lewis structure
              Draw the structural formula and identify the dipole(directional arrow) if polar
              Identify the electron geometry
              Identify the molecular shape
              What is the approximate bond angle?


   a. CTe2                                b. POCl                                      c. SeO3




   d. AsBr3                               e. N2O                                       f. OF2

				
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