Write the structure of the monomers used for getting the following polymers:
(i) Nylon-6 (ii) Melamine-fomaldehyde polymer
(iii) Teflon

Explanation

To answer the question, we will identify and write the structures of the monomers used to synthesize the specified polymers: Nylon-6, Melamine-formaldehyde polymer, and Teflon.

### Step-by-Step Solution:

#### (i) Nylon-6
1. **Identify the Monomer**: The monomer used to produce Nylon-6 is caprolactam.
2. **Draw the Structure of Caprolactam**:
- Caprolactam is a cyclic amide (lactam) with a six-membered ring.
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