IUPAC name of given organic compound `(CH_3)_2C(CH_2CH_3)CH_2CH(Cl)CH_3` is -

Options

A. 5 - Chloro - 3, 3 - dimethylhexane
B. 5 - Chloro - 2 - ethyl - 2 methylpentane
C. 2 - Chloro - 4 - ethyl - 4 methylpentane
D. 2 - Chloro -4, 4 - dimethylhexane

Answer

To determine the IUPAC name of the organic compound `(CH_3)_2C(CH_2CH_3)CH_2CH(Cl)CH_3`, we will follow these steps:

### Step-by-Step Solution:

1. **Identify the Structure**:
The compound can be broken down as follows:
- The main carbon chain consists of 6 carbon atoms.
- There are two methyl groups (–CH₃) attached to the second carbon of the chain.
- There is a chlorine atom (–Cl) attached to the fourth carbon of the chain.

2. **Count the Carbon Atoms**:
Count the total number of carbon atoms in the longest continuous chain. In this case, the longest chain has 6 carbon atoms.

3. **Number the Carbon Chain**:
Number the carbon chain from one end to the other to give the substituents the lowest possible numbers.
- Start from the end closest to the chlorine atom.
- The numbering will be as follows:
- C1: CH₃
- C2: C (with two methyl groups)
- C3: CH₂
- C4: CH (with Cl)
- C5: CH₂
- C6: CH₃

4. **Identify Substituents**:
- There are two methyl groups on carbon 2 (2,2-dimethyl).
- There is a chlorine atom on carbon 4 (4-chloro).

5. **Construct the IUPAC Name**:
Combine the substituents with the name of the main chain. The main chain is hexane (since it has 6 carbon atoms).
- The full name will be: 4-chloro-2,2-dimethylhexane.

### Final Answer:
The IUPAC name of the compound `(CH_3)_2C(CH_2CH_3)CH_2CH(Cl)CH_3` is **4-chloro-2,2-dimethylhexane**.

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