 
       
      
    13.3 For the following compounds, write structural formulas and IUPAC names for all possible isomers having the number of the double or triple bond as indicated :
        (a)       ( one double bond)
    
 
                
                   the following isomers are possible with one double bond ;
| 
 | But-1-ene | 
| 
 | But-2-ene | 
| 
 | 2-Methylprop-1-ene | 
 
                 
                


