First slide

Isomerism

Question

Total number of alkadienes possible with the formula, C₄H₆ is

Moderate

A

5
B

3
C

4
D

2

Solution

Number of alkynes = 2 ;
Number of terminal alkynes = 1 ;
Number of non terminal (internal) alkynes = 1 ;
Number of alkadienes = 2 ;
Number of cumulative dienes = 1 ;
Number of conjugated dienes = 1 ;
Number of acyclic isomers = 4 ;
Number of cycloalkenes = 4 ;
Number of cyclic isomers = 4 ;
Number of acyclic structural isomers = 4 ;
Number of acyclic stereo isomers = 0 ;
Number of cyclic structural isomers = 4 ;
Number of cyclic stereo isomers = 0 ;
Total number of structural isomers = 8 ;
Total number of stereo isomers = 0 ;
Total number of isomers = 8 ;

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