A) \[-C{{F}_{2}}-C{{F}_{2}}-\]
B) \[C{{F}_{2}}=C{{F}_{2}}\]
C) \[-(C{{H}_{2}}-C{{H}_{2}}){{-}_{n}}\]
D)
Correct Answer: A
Solution :
Teflon It is polymer of \[nC{{F}_{2}}=C{{F}_{2}}\xrightarrow{{}}-{{(C{{F}_{2}}-C{{F}_{2}})}_{n}}-\] Hence, Teflon is repeating unit of \[-C{{F}_{2}}-C{{F}_{2}}-\].
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