The correct IUPAC name of compound with molecular formula `(CH_(3))_(3)C-CH_(3)` is

Options

A. Pentane
B. 1,1,1-Trimethylethane
C. 2,2-Dimethylpropane
D. Neopentane

Explanation

To determine the correct IUPAC name of the compound with the molecular formula `(CH₃)₃C-CH₃`, we will follow these steps:

### Step 1: Draw the Structure
The molecular formula `(CH₃)₃C-CH₃` indicates that there is a central carbon atom (C) bonded to three methyl groups (CH₃) and one additional methyl group (CH₃) attached to it. This can be visualized as:

```
CH₃
|
CH₃ - C - CH₃
|
CH₃
```

### Step 2: Identify the Longest Carbon Chain
Next, we need to identify the longest continuous chain of carbon atoms. In this case, the longest chain consists of three carbon atoms (C-C-C).

### Step 3: Number the Carbon Chain
We will number the carbon chain starting from one end. The numbering will be as follows:

```
1 2 3
CH₃ - C - CH₃
|
CH₃
```

### Step 4: Identify Substituents
At carbon 2, we have two methyl (CH₃) groups as substituents.

### Step 5: Name the Substituents
Since there are two methyl groups on carbon 2, we use the prefix "di" to indicate that there are two identical substituents. Thus, we will name the substituents as "2,2-dimethyl".

### Step 6: Combine the Names
The longest carbon chain consists of three carbons, which is named "propane". Therefore, we combine the substituent names with the name of the longest chain:

- The full IUPAC name is "2,2-dimethylpropane".

### Final Answer
The correct IUPAC name of the compound `(CH₃)₃C-CH₃` is **2,2-dimethylpropane**.

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