Draw the structure for the following alkenes.
`(i) 6-` Bromo-`2`, `3`-dimethyl-`2`-hexene
`(ii) 5-` Bromo -`4`-Chloro-`1`-heptene
`(iii) 2`, `5`-methyl -`4`.Octene
`(iv) 4`- methyl-`2` Pentene

Explanation

`(i) 6-` Bromo-`2`, `3`-dimethyl-`2`-hexene
`overset(1)(CH_(3))-underset(CH_(3))underset(|)overset(2)(C )=underset(CH_(3))underset(|)overset(3)(C )-overset(4)(CH_(2))-overset(5)(CH_(2))-underset(Br)underset(|)overset(6)(CH_(2))`
`(ii) 5-` Bromo -`4`-Chloro-`1`-heptene
`overset(1)(CH_(2))=overset(2)(C )Hoverset(3)(-)CH_(2)-underset(7CH_(3))underset(|)overset(4)(CH)-underset(Br)underset(|)overset(5)(CH)-overset(6)(CH_(2))-overset(8)(CH_(3))`
`(iii) 2`, `5`-methyl -`4`.Octene
`overset(1)(CH_(3))-underset(CH_(3))underset(|)overset(2)(CH)overset(3)(=)CH_(2)-overset(4)(CH)=underset(CH_(3))underset(|)overset(5)(CH)-overset(6)(CH_(2))-overset(8)(CH_(3))`
`(iv) 4`- methyl-`2` Pentene
`overset(1)(CH_(3))-overset(2)(CH)=overset(3)(CH)-underset(CH_(3))underset(|)overset(4)(CH)=overset(5)(CH_(3))`