How would you name the following compounds?
`H-overset(H)overset(|)C=O`

Answer

To name the compound `H-C(=O)H` using the IUPAC system, follow these steps:

### Step 1: Identify the Parent Chain
The first step in naming an organic compound is to identify the longest continuous chain of carbon atoms. In this case, there is only one carbon atom in the structure.

### Step 2: Determine the Parent Name
For a compound with one carbon atom, the parent name is "methane."

### Step 3: Identify the Functional Group
Next, we need to identify the functional group present in the compound. The functional group here is `CHO`, which is characteristic of aldehydes.

### Step 4: Modify the Parent Name
Since the compound contains an aldehyde functional group, we need to modify the parent name. In IUPAC nomenclature, the suffix for aldehydes is "-al." Therefore, we take the parent name "methane" and drop the "e," replacing it with "al."

### Step 5: Finalize the Name
After making the modification, the final name of the compound is "methanal."

### Final Answer
The IUPAC name of the compound `H-C(=O)H` is **methanal**.

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