Q. The total number of isomers for $ {{C}_{4}}{{H}_{8}} $ is
BVP MedicalBVP Medical 2010
Solution:
The possible isomers of $ {{C}_{4}}{{H}_{8}} $ are as (i) $ \underset{1-butene}{\mathop{C{{H}_{3}}C{{H}_{2}}CH=C{{H}_{2}}}}\, $ (ii) $ \underset{trans\,2-butene}{\mathop{C{{H}_{3}}\overset{H}{\mathop{\overset{|}{\mathop{C}}\,}}\,=\underset{H}{\mathop{\underset{|}{\mathop{C}}\,}}\,-C{{H}_{3}}}}\, $ (iii) $ \underset{cis\,2-butene}{\mathop{C{{H}_{3}}CH=CHC{{H}_{3}}}}\, $ (iv) $ \underset{2-methyl\,propane}{\mathop{C{{H}_{3}}\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,=C{{H}_{2}}}}\, $ (v)
and (vi)

