14. How many sigma bonds and pi bonds are there in each of the following molecules?a.                H        Cl---C----Cl                H b.       H                      Cl                     C=C           H                      H  c.                   H              H3C---C=C---C=C---H                           H

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Asked Oct 10, 2019
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14. How many sigma bonds and pi bonds are there in each of the following molecules?

a.

                H

        Cl---C----Cl

                H

 

b.       H                      Cl

                     C=C 

          H                      H

 

 

c.                   H   

           H3C---C=C---C=C---H

                           H

 

 

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Expert Answer

Step 1

The counting of the number of sigma and pi-bonds can be done by noting the following points:

  1. Every single covalent bond is a sigma bond.
  2. Every double covalent bond has both one sigma and one pi bond in it.
  3. Every triple covalent bond has one sigma and two pi bonds in it.
Step 2

a. In the given molecule, there are four single covalent bonds only. Therefore, there are four sigma bonds and no pi-bonds.

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Н CІ—С—СІ н sigma bonds 4 pi-bonds 0

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Step 3

b. In the given molecule, there are four single covalent bonds, which represents four sigma bonds and there is one double b...

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Cl н н н sigma bonds 5 pi-bonds 1

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