A materials chemist is checking a proposed structure for an addition polymer used in a protective coating.
| Structure | Formula |
|---|---|
| Alkene monomer | CH2=CHCH2CH3\text{CH}_2\text{=CHCH}_2\text{CH}_3CH2=CHCH2CH3 |
| Proposed repeating unit | [-CH2-CH(CH2CH3)-]n\left[\text{-CH}_2\text{-CH}(\text{CH}_2\text{CH}_3)\text{-}\right]_n[-CH2-CH(CH2CH3)-]n |
Explain how the information shows that the proposed repeating unit could be formed from the alkene monomer by addition polymerisation.