How many number of dihydric phenols possible with the molecular formula
`C_(6)H_(6)O_(2)`.

Explanation

To determine the number of dihydric phenols possible with the molecular formula \( C_6H_6O_2 \), we need to analyze the structure of phenol and the placement of the hydroxyl (OH) groups.

### Step-by-Step Solution:

1. **Understanding Dihydric Phenols**:
- Dihydric phenols, also known as dihydroxyphenols, are compounds that contain a benzene ring with two hydroxyl (OH) groups attached to it.

2. **Molecular Formula**:
- The given molecular formula is \( C_6H_6O_2 \). This indicates that we have a benzene ring (which has 6 carbon atoms and 6 hydrogen atoms) and 2 oxygen atoms (from the two hydroxyl groups).

3. **Placement of Hydroxyl Groups**:
- The two OH groups can be positioned on the benzene ring in different ways. The common positions are:
- **Ortho (1,2-positions)**: Both OH groups are adjacent to each other.
- **Meta (1,3-positions)**: The OH groups are separated by one carbon atom.
- **Para (1,4-positions)**: The OH groups are opposite each other on the benzene ring.

4. **Identifying Possible Structures**:
- **Ortho-Dihydroxyphenol**: This structure has the two OH groups on carbon 1 and carbon 2.
- **Meta-Dihydroxyphenol**: This structure has the two OH groups on carbon 1 and carbon 3.
- **Para-Dihydroxyphenol**: This structure has the two OH groups on carbon 1 and carbon 4.

5. **Counting the Structures**:
- We have identified three distinct structures based on the positions of the hydroxyl groups:
- Ortho-Dihydroxyphenol
- Meta-Dihydroxyphenol
- Para-Dihydroxyphenol

6. **Conclusion**:
- Therefore, the total number of dihydric phenols possible with the molecular formula \( C_6H_6O_2 \) is **3**.

### Final Answer:
The number of dihydric phenols possible with the molecular formula \( C_6H_6O_2 \) is **3**.