question_answer 6)

               Draw the structures of the following compounds: (i) Ethanoic acid                                (ii) Brompounds:              (c) Butanone                      (d) Hexanal   Are structural isomers possible for bromopentane? 

Answer:

(i)                            or                            (ii)   or                            (iii)                                or            (iv) or     Bromopentane has a chain of five carbon atoms. It can exist in a number of forms which are structural isomers. (i)                       (ii) (iii)                               (iv) (v)                                    (vi)     The structural isomers (iv), (v) and (vi) which differ m the arrangement of carbon atoms are known As position isomers. The structural isomers (iv), (v) and (vi) which differ in the arrangement of carbon atoms in the chain are called chain isomers. In the IUPAC name, the name of prefix bromo is written before that of prefix methyl. In  fact, alphabetical order is followed while naming the different prefixes.