What are the possible isomers for the formula `C_(4)H_(9)Cl` ? Give their structures and IUPAC names.

Explanation

`C_(4)H_(9)Cl`
(i) `CH_(3)-CH_(2)-CH_(2)-CH_(2)Cl` 1-chloro butane
(ii) `CH_(3)-CH_(2)-underset(Cl)underset(|)(CH)-CH_(3)` 2-chloro butane
(iii) `CH_(3)-underset(CH_(3))underset(|)(CH)-CH_(2)Cl` 1-chloro-2-methyl propane
(iv) `CH_(3)-underset(Cl)underset(|)overset(CH_(3))overset(|)C-CH_(3)` 2-chloro-2methyl propane