CHXII15:POLYMERS
324957
The repeating units of \(\mathrm{PTFE}\) are
1 \(\mathrm{Cl}_{2} \mathrm{CH}-\mathrm{CH}_{3}\)
2 \(\mathrm{F}_{2} \mathrm{C}=\mathrm{CF}_{2}\)
3 \(\mathrm{F}_{3} \mathrm{C}-\mathrm{CF}_{3}\)
4 \(\mathrm{FCl} \mathrm{C}=\mathrm{CF}_{2}\)
Explanation:
The repeating unit of PTFE (polytetrafluoroethylene) is \(\mathrm{CF}_{2}=\mathrm{CF}_{2}\).