Draw the skeletal structures for 1,1-dibromo-2,2-dichloro-3-ethyl-4,4-dimethylpentane and 2-chloro-3-iodobut-2-ene.

Here are the structures for the given compounds:

1. 1,1-dibromo-2,2-dichloro-3-ethyl-4,4-dimethylpentane The parent chain is pentane, which has 5 carbon atoms.
   • Carbon 1 has two bromine atoms.
   • Carbon 2 has two chlorine atoms.
   • Carbon 3 has an ethyl group ($\text{CH}_2\text{CH}_3$).
   • Carbon 4 has two methyl groups ($\text{CH}_3$).
   \boxed{ \begin{smallmatrix} Br \\ | \\ \text