Which of the following alkyl halides is iso- butyl bromide ?

Options

A. `CH_3CH_2CH(Br)CH_3`
B. `CH_3CH_2CH_2CH_2Br`
C. `H_3C-underset(CH_3)underset(|)overset(CH_3)overset(|)C-Br`
D. `H_3C-overset(CH_3)overset(|)(C)-CH_2Br`

Answer

To determine which of the given alkyl halides is isobutyl bromide, we first need to understand the structure of isobutyl bromide.

### Step 1: Understand the Structure of Isobutyl Bromide
Isobutyl bromide is an alkyl halide derived from isobutane. It has the following structure:
- The isobutyl group has a branched structure with a four-carbon chain.
- The bromine atom is attached to the first carbon of the isobutyl group.

The structural formula of isobutyl bromide can be represented as:
```
CH3
|
CH3-CH-CH2-Br
```
In this structure, the bromine (Br) is attached to the second carbon of the butane chain.

### Step 2: Identify the Alkyl Halides Given
Next, we would look at the options provided in the question (not specified here) and identify the structures of each alkyl halide.

### Step 3: Compare the Structures
We will compare the structures of the given alkyl halides with the structure of isobutyl bromide:
- Look for the branched structure with the bromine attached to the appropriate carbon.

### Step 4: Select the Correct Alkyl Halide
Once we identify the alkyl halide that matches the structure of isobutyl bromide, we can conclude which one is the correct answer.

### Conclusion
The alkyl halide that matches the structure of isobutyl bromide is the correct answer.

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