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 of identifying the primary, secondary, and tertiary carbon atoms in the alkane `H3C-CH2-C(CH3)2-CH2-CH(CH3)2`, and to determine the number of hydrogen atoms bonded to each of these carbon atoms, we will follow these steps:

### Step 1: Draw the Structure
First, we need to draw the structure of the given alkane. The structure can be represented as follows:

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

### Step 2: Identify Carbon Atoms
Now, we will label each carbon atom in the structure:

1. **C1**: The first carbon (attached to three hydrogens, CH3).
2. **C2**: The second carbon (attached to two hydrogens and one carbon, CH2).
3. **C3**: The third carbon (attached to two CH3 groups and one carbon, C(CH3)2).
4. **C4**: The fourth carbon (attached to two hydrogens and one carbon, CH2).
5. **C5**: The fifth carbon (attached to one hydrogen and two CH3 groups, CH(CH3)2).

### Step 3: Classify Each Carbon
Now we classify each carbon atom as primary, secondary, or tertiary:

- **Primary Carbon (1°)**: A carbon atom bonded to only one other carbon atom.
- **Secondary Carbon (2°)**: A carbon atom bonded to two other carbon atoms.
- **Tertiary Carbon (3°)**: A carbon atom bonded to three other carbon atoms.

From our structure:
- **C1**: Primary (bonded to one carbon)
- **C2**: Secondary (bonded to two carbons)
- **C3**: Tertiary (bonded to three carbons)
- **C4**: Secondary (bonded to two carbons)
- **C5**: Tertiary (bonded to three carbons)

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

- **C1**: 3 hydrogens (CH3)
- **C2**: 2 hydrogens (CH2)
- **C3**: 1 hydrogen (since it is bonded to two CH3 groups)
- **C4**: 2 hydrogens (CH2)
- **C5**: 1 hydrogen (since it is bonded to one carbon and two CH3 groups)

### Summary of Results
- **C1 (Primary)**: 3 H atoms
- **C2 (Secondary)**: 2 H atoms
- **C3 (Tertiary)**: 1 H atom
- **C4 (Secondary)**: 2 H atoms
- **C5 (Tertiary)**: 1 H atom

### Final Answer
- Primary Carbon (C1): 3 H atoms
- Secondary Carbons (C2, C4): 2 H atoms each
- Tertiary Carbons (C3, C5): 1 H atom each