Give IUPAC name of the following :
`(CH_(3))_(3)C-CH_(2)COCH_(3)`

Explanation

To determine the IUPAC name of the compound `(CH₃)₃C-CH₂COCH₃`, we will follow these steps:

### Step 1: Identify the longest carbon chain
The first step is to identify the longest continuous carbon chain in the structure. In this case, the longest chain consists of five carbon atoms.

### Step 2: Identify the functional group
Next, we need to identify the functional group present in the compound. The compound contains a ketone functional group (C=O) located on the second carbon of the chain.

### Step 3: Number the carbon chain
We will number the carbon chain starting from the end closest to the functional group to give the ketone the lowest possible number. Thus, the numbering will be as follows:
1. C1 (CH₃)
2. C2 (C=O)
3. C3 (CH₂)
4. C4 (C with two methyl groups)
5. C5 (CH₃)

### Step 4: Identify substituents
In this structure, at carbon 4, there are two methyl groups attached.

### Step 5: Combine the information to write the IUPAC name
Now, we can compile all the information:
- The longest chain has 5 carbon atoms, which corresponds to "pentane".
- The ketone functional group is at position 2, so we will use "2-one".
- The substituents are two methyl groups at position 4, which we denote as "4,4-dimethyl".

Putting it all together, the IUPAC name of the compound is:
**4,4-dimethylpentan-2-one**.

### Summary of the IUPAC Name:
- Longest chain: Pentane (5 carbons)
- Functional group: Ketone (2-one)
- Substituents: 4,4-dimethyl

### Final Answer:
**4,4-dimethylpentan-2-one**

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