Which one of the following halogens is present in Teflon________________?
Correct answer: D. F2
- A. I2
- B. Br2
- C. Cl2
- D. F2
Explanation
Teflon is polytetrafluoroethylene, formed from tetrafluoroethene and containing fluorine atoms attached to the carbon chain. Its C-F bonds give it high chemical resistance and low friction. Students may choose chlorine because many familiar synthetic polymers, such as PVC, contain chlorine, but Teflon contains fluorine.
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About Polymers
Polymers are large molecules made from repeating monomer units joined by covalent bonds. The topic distinguishes addition polymers such as polyethylene, PVC and polystyrene from condensation polymers such as nylon and polyester, and relates chain structure to thermoplastics, thermosetting polymers, elastomers, properties, uses and environmental concerns.
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