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

Options

A. `CH_(3)CH_(2)underset(Br)underset(|)CHCH_(3)`
B. `CH_(3)CH_(2)CH_(2)CH_(2)Br`
C. `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-Br`
D. `CH_(3)-underset(CH_(3))underset(|)(CH)-CH_(2)Br`

Answer

To determine which of the given alkyl halides is isobutyl bromide, we can follow these steps:

### Step 1: Understand the Structure of Isobutyl Bromide
Isobutyl bromide is an alkyl halide with the following structure:
- It has a branched structure with a bromine atom (Br) attached to one of the carbon atoms.
- The molecular formula can be represented as C4H9Br.
- The structural formula can be written as CH3-CH(CH3)-CH2-Br.

### Step 2: Identify the Structure of Isobutyl Bromide
From the structural formula, we can see that:
- There are four carbon atoms in total.
- The bromine atom is attached to the carbon that is connected to one methyl group (CH3) and two other carbon atoms.

### Step 3: Analyze the Given Options
Now, we need to analyze the provided options (A, B, C, D) to find which one matches the structure of isobutyl bromide.

1. **Option A**: Check if it has the same structure as isobutyl bromide.
2. **Option B**: Check if it has the same structure as isobutyl bromide.
3. **Option C**: Check if it has the same structure as isobutyl bromide.
4. **Option D**: Check if it has the same structure as isobutyl bromide.

### Step 4: Compare Each Option
- **Option A**: This structure does not match isobutyl bromide.
- **Option B**: This structure does not match isobutyl bromide; it is tertiary butyl bromide.
- **Option C**: This structure matches isobutyl bromide (CH3-CH(CH3)-CH2-Br).
- **Option D**: This structure does not match isobutyl bromide.

### Conclusion
After analyzing all the options, we find that **Option C** is the correct structure for isobutyl bromide.

### Final Answer
**The correct answer is Option C.**

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