A quality-control chemist analyses the smallest repeating unit of an addition polymer.
| Backbone carbon | Atoms or groups attached to the backbone carbon |
|---|---|
| first carbon | one H atom and one CH3\text{CH}_3CH3 group |
| second carbon | one H atom and one CH2CH3\text{CH}_2\text{CH}_3CH2CH3 group |
The chemist considers two possible monomers:
P: CH3CH=CHCH2CH3\text{CH}_3\text{CH}=\text{CHCH}_2\text{CH}_3CH3CH=CHCH2CH3
Q: CH2=C(CH3)CH2CH3\text{CH}_2=\text{C}(\text{CH}_3)\text{CH}_2\text{CH}_3CH2=C(CH3)CH2CH3
Explain which possible monomer, P or Q, was used to make the polymer.