In the alkane `H_3C-CH_(2)-C(CH_(3))_2-CH_(2)-CH(CH_(3))_2`, identify `1^(@),2^(@),3^(@),` carbon atoms and give the number of H atoms bonded to each one of these.

Explanation

To solve the problem, we will first draw the structure of the given alkane `H3C-CH2-C(CH3)2-CH2-CH(CH3)2` and then identify the degree of each carbon atom along with the number of hydrogen atoms bonded to each one.

### Step 1: Draw the Structure
The given alkane can be represented as follows:

```
CH3
|
H3C - CH2 - C - CH2 - C
| |
CH3 CH3
```

### Step 2: Identify Carbon Atoms
Now, let's label the carbon atoms in the structure:

1. **C1**: CH3 (first carbon)
2. **C2**: CH2 (second carbon)
3. **C3**: C (central carbon connected to two CH3 groups)
4. **C4**: CH2 (fourth carbon)
5. **C5**: C (connected to CH3 and CH2)

### Step 3: Determine Degree of Each Carbon Atom
- **1° (Primary) Carbon**: A carbon atom bonded to only one other carbon atom.
- **2° (Secondary) Carbon**: A carbon atom bonded to two other carbon atoms.
- **3° (Tertiary) Carbon**: A carbon atom bonded to three other carbon atoms.

From our structure:
- **C1** (CH3) is a **1° carbon** (bonded to one carbon).
- **C2** (CH2) is a **2° carbon** (bonded to two carbons).
- **C3** (central carbon) is a **3° carbon** (bonded to three carbons).
- **C4** (CH2) is a **2° carbon** (bonded to two carbons).
- **C5** (CH) is a **1° carbon** (bonded to one carbon).

### Step 4: Count Hydrogen Atoms
Now, we will count the number of hydrogen atoms bonded to each carbon atom:

- **C1 (1°)**: 3 H atoms (as in CH3)
- **C2 (2°)**: 2 H atoms (as in CH2)
- **C3 (3°)**: 0 H atoms (as it is bonded to three carbons)
- **C4 (2°)**: 2 H atoms (as in CH2)
- **C5 (1°)**: 3 H atoms (as in CH)

### Summary of Carbon Degrees and Hydrogen Counts
- **C1 (1°)**: 3 H
- **C2 (2°)**: 2 H
- **C3 (3°)**: 0 H
- **C4 (2°)**: 2 H
- **C5 (1°)**: 3 H

### Final Answer
- **1° Carbons**: C1 and C5 (3 H each)
- **2° Carbons**: C2 and C4 (2 H each)
- **3° Carbon**: C3 (0 H)