The number of `N-CH_(2)-N` bonds in urotropine is

Answer

To solve the question regarding the number of N-CH2-N bonds in urotropine, we will follow these steps:

### Step 1: Understand Urotropine
Urotropine is also known as hexamethylenetetramine (HMTA). It is a chemical compound formed from the reaction of formaldehyde and ammonia.

### Step 2: Write the Structure of Urotropine
The structure of urotropine can be represented as follows:
- It consists of a central carbon atom bonded to four NH groups, with each NH group connected to a CH2 group.

### Step 3: Identify the N-CH2-N Bonds
In the structure of urotropine, each NH group is connected to a CH2 group, and these CH2 groups are also connected to adjacent NH groups.

### Step 4: Count the N-CH2-N Bonds
In urotropine:
- There are 6 CH2 groups.
- Each CH2 group connects two nitrogen atoms (one on each side).
- Therefore, the number of N-CH2-N bonds is equal to the number of CH2 groups, which is 6.

### Conclusion
Thus, the total number of N-CH2-N bonds in urotropine is **6**.

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