Write the IUPAC name of `(CH_3 )_2 CHCHO`.

Explanation

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

### Step 1: Identify the Functional Group
The given compound contains an aldehyde functional group, which is characterized by the presence of the -CHO group. In IUPAC nomenclature, aldehydes are given the highest priority and are numbered from the carbon atom of the -CHO group.

### Step 2: Determine the Longest Carbon Chain
Next, we need to identify the longest continuous carbon chain that includes the functional group. In this case, the longest chain consists of three carbon atoms (from the -CHO group to the carbon atoms in `(CH₃)₂CH`).

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