The compound `CH_3-CH_2-CH_3` contains two `1^@` and one `2^@` carbon atoms.

Explanation

To solve the question regarding the compound `CH3-CH2-CH3` and its carbon atom degrees, we will follow these steps:

### Step 1: Identify the Structure of the Compound
The compound `CH3-CH2-CH3` is known as propane. It consists of three carbon atoms connected in a chain.

### Step 2: Determine the Degree of Each Carbon Atom
1. **First Carbon (CH3)**: This carbon is attached to only one other carbon (the second carbon). Therefore, it is a **1° (primary) carbon**.
2. **Second Carbon (CH2)**: This carbon is attached to two other carbons (the first and third carbons). Therefore, it is a **2° (secondary) carbon**.
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