Teflon is a polymer of:

Options

A. tetrafluoroethylene
B. tetrabromoethylene
C. tetraiodoethylene
D. tetrachloroethylene .

Explanation

To solve the question "Teflon is a polymer of:", we need to identify the correct monomer that forms Teflon when polymerized.

### Step-by-Step Solution:

1. **Identify Teflon**: Teflon is commonly known as polytetrafluoroethylene (PTFE).

2. **Recognize the Monomer**: The monomer that polymerizes to form Teflon is tetrafluoroethylene (C2F4).

3. **Review the Options**: The options given are:
- a) Tetrafluoroethylene
- b) Tetrabromoethylene
- c) Tetraiodoethylene
- d) Tetrachloroethylene

4. **Analyze Each Option**:
- **Tetrafluoroethylene**: This is the correct monomer for Teflon.
- **Tetrabromoethylene**: This contains bromine and is not related to Teflon.
- **Tetraiodoethylene**: This contains iodine and is also not related to Teflon.
- **Tetrachloroethylene**: This contains chlorine and is not related to Teflon.

5. **Conclusion**: The correct answer is **a) Tetrafluoroethylene**.

### Final Answer:
Teflon is a polymer of **tetrafluoroethylene**.

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