The IUPAC name of `(CH_(3))_(2)CHCH_(2)CH_(2)Cl` is :

Options

A. 1-Chloropentane
B. 1-Chloro-3-methylbutane
C. 2-Methyl-3-chloropropane
D. None

Explanation

To determine the IUPAC name of the compound `(CH₃)₂CHCH₂CH₂Cl`, we can follow these steps:

### Step 1: Identify the longest carbon chain
The first step in naming an organic compound is to identify the longest continuous carbon chain. In this case, the longest chain consists of 4 carbon atoms.

### Step 2: Number the carbon chain
Next, we need to number the carbon chain. We will start numbering from the end closest to the substituent that has the highest priority. In this case, the chlorine (Cl) substituent takes priority over the methyl (CH₃) groups.

So, we number the carbon chain as follows:
1. C1 - Cl
2. C2 - CH₃
3. C3 - CH
4. C4 - CH₂

### Step 3: Identify and name the substituents
Now we identify the substituents on the carbon chain:
- At carbon 1, we have a chloro (Cl) substituent.
- At carbon 2, we have two methyl (CH₃) groups.

### Step 4: Combine the substituents with the parent chain name
The parent chain has 4 carbons, which corresponds to the root name "butane." Since the compound is saturated, we use "butane" as the base name.

### Step 5: Write the full IUPAC name
We combine the substituents with the parent chain name. The substituents are listed in alphabetical order, and we indicate their positions on the carbon chain:

- The chloro group is at position 1.
- The two methyl groups are at position 2.

Thus, the full IUPAC name is:
**1-chloro-2,2-dimethylbutane**

### Summary of the IUPAC Name
The IUPAC name of `(CH₃)₂CHCH₂CH₂Cl` is **1-chloro-2,2-dimethylbutane**.

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