What are the oxidation number of the underlined elements in each of the following and how do you rationalise your results?
`ul(C)H_(3)ul(C)OOH`

Explanation

To determine the oxidation numbers of the underlined carbon atoms in ethanoic acid (CH₃COOH), we can follow these steps:

### Step 1: Identify the structure of ethanoic acid
Ethanoic acid has the molecular formula CH₃COOH. It consists of two carbon atoms, four hydrogen atoms, and two oxygen atoms. The structure can be represented as follows:

```
O
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