How many monobromo derivatives are obtained when 2-methylbutane is subjected to photobromination ?

Explanation

To determine how many monobromo derivatives are obtained when 2-methylbutane is subjected to photobromination, we can follow these steps:

### Step 1: Understand the Structure of 2-Methylbutane
2-Methylbutane has the following structure:
```
CH3
|
CH3 - CH - CH2 - CH3
...