|  |  |  |  |  |  |  |  |  | 
   
    | • | Write the
    skeletal structure and fill in with 
 |  | 
   
    |  | 
   
    |  | the info you came
    up with. After you’ve put 
 | 
   
    |  | 
   
    |  | in the # bonds
    calculated, fill in the octets. 
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    |  | 
   
    | • | H (and F) form
    only one bond. Therefore 
 |  | 
   
    |  | 
   
    |  | they can only be
    terminal atoms in a 
 |  | 
   
    |  | 
   
    |  | structure. 
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    |  | 
   
    | • | So you can not
    have 
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    |  | 
   
    | • | C---H---C 
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    |  | 
   
    | • | It has to be   H---C--C 
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