What is the number of atoms present in the backbone of each repeating unit of Nylon-6?

Answer

To determine the number of atoms present in the backbone of each repeating unit of Nylon-6, we can follow these steps:

### Step 1: Understand the Structure of Nylon-6
Nylon-6, also known as polycaprolactam, is a synthetic polymer. The repeating unit of Nylon-6 is derived from caprolactam, which has a specific chemical structure.

### Step 2: Identify the Chemical Formula of the Repeating Unit
The repeating unit of Nylon-6 can be represented as:
\[ \text{C}_6\text{H}_{11}\text{NO} \]
This structure includes:
- 6 Carbon (C) atoms
- 11 Hydrogen (H) atoms
- 1 Nitrogen (N) atom
- 1 Oxygen (O) atom

### Step 3: Count the Atoms in the Backbone
The backbone of the polymer consists of the carbon atoms and the nitrogen atom. In the case of Nylon-6, the backbone includes:
- 6 Carbon atoms
- 1 Nitrogen atom

### Step 4: Calculate the Total Number of Atoms in the Backbone
Now, we can add the number of atoms in the backbone:
- Total atoms in the backbone = Number of Carbon atoms + Number of Nitrogen atoms
- Total atoms in the backbone = 6 (C) + 1 (N) = 7 atoms

### Conclusion
The number of atoms present in the backbone of each repeating unit of Nylon-6 is **7**.

---