1. The problem statement, all variables and given/known data Name the structural isomers of C4H8Br2 and remember to number the carbon atoms such that you minimize the numbers in the name. How many stuctural isomers of C4H8Br2 are there? 3. The attempt at a solution I'm not sure how many there should be. So far I've found 9: 1,1-dibromobutane 1,2-dibromobutane 1,3-dibromobutane 1,4-dibromobutane 2,2-dibromobutane 2,3-dibromobutane 1,1-dibromo-2-methylpropane 1,2-dibromo-2-methylpropane 1,3-dibromo-2-methylpropane Are there anymore that I'm missing? I can't seem to find them.