Question

(a) Define the term isomerism. State two main causes of Isomerism.
(b) Draw the chain isomers of hexane $\left(C_6{H}_{12}\right)$.
(c) Draw position isomers of butene $\left(C_4{H}_8\right)$. [3 MARKS]

Answer 1

Each Part: 1 Mark

(a) Isomerism : The compounds having the some molecular formula but different physical and chemical properties are called isomers and this phenomenon is called isomerism.
The two main causes of isomerism are:
(i) Difference in the mode of linking of atoms.
(ii) Different spacial arrangement of atoms or groups.

(b) Chain isomers of hexane:



(c) Position isomers of butene: