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

Options

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

Explanation

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

### Step 1: Identify the Longest Carbon Chain
First, we need to identify the longest continuous carbon chain in the compound. In this case, we can see that the longest chain consists of four carbon atoms.

### Step 2: Number the Carbon Chain
Next, we will number the carbon chain starting from the end nearest to the substituent (in this case, the chlorine atom). This gives us the following numbering:
1. C1
2. C2
3. C3
4. C4

### Step 3: Identify the Substituents
Now, we need to identify the substituents attached to the main carbon chain. We have:
- A chlorine atom (Cl) attached to C1.
- A methyl group (–CH₃) attached to C3.

### Step 4: Name the Substituents
According to IUPAC nomenclature, we will name the substituents in alphabetical order. The substituents are:
- Chloro (from chlorine)
- Methyl (from the methyl group)

### Step 5: Combine the Names
When combining the names of the substituents with the name of the main chain, we will place the substituents in alphabetical order:
- Chloro comes before Methyl.

Thus, the name will be structured as:
- 1-Chloro (for the chlorine on C1)
- 3-Methyl (for the methyl group on C3)

### Step 6: Name the Main Chain
The main carbon chain consists of four carbon atoms, which is called "butane".

### Final IUPAC Name
Putting it all together, the IUPAC name of the compound `(CH₃)₂CHCH₂CH₂Cl` is:
**1-Chloro-3-methylbutane**

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