IUPAC Name for :
`(CH_(3))_(2)C(C_(2)H_(5))_(2)`

Options

A. Diethyl dimenthyl methane
B. 2-Ethyl-2-methyl butane
C. 3,3- Dimethyl pentane
D. None of these

Answer

To determine the IUPAC name for the compound `(CH₃)₂C(C₂H₅)₂`, we will follow these steps:

### Step 1: Identify the Structure
The given structure can be broken down as follows:
- There is a central carbon atom (C) attached to:
- Two methyl groups (CH₃)
- Two ethyl groups (C₂H₅)

### Step 2: Draw the Structure
To visualize the compound, we can draw it:
```
CH3
|
CH3-C-CH2-CH3
|
CH2-CH3
```
This shows that the central carbon has two methyl groups and two ethyl groups attached to it.

### Step 3: Determine the Longest Carbon Chain
Next, we need to identify the longest continuous carbon chain. In this case, the longest chain is made up of five carbon atoms:
- The chain can be numbered from either end, but we will start from the end that gives the substituents the lowest possible numbers.

### Step 4: Number the Carbon Chain
Numbering the carbon chain from the end closest to the substituents:
1. C1 (ethyl)
2. C2 (ethyl)
3. C3 (central carbon with substituents)
4. C4 (methyl)
5. C5 (methyl)

### Step 5: Identify the Substituents
From the numbering:
- At carbon 3, we have two methyl groups (2,3-dimethyl).
- The longest chain consists of five carbons, which corresponds to "pentane".

### Step 6: Combine the Information
Putting this all together, the IUPAC name for the compound is:
- 3,3-Dimethylpentane

### Final Answer
The IUPAC name for `(CH₃)₂C(C₂H₅)₂` is **3,3-Dimethylpentane**.

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