In liquid water, the number of `H_(2)O` molecules surrounded to one `H_(2)O` molecule are_____.

Answer

To determine the number of \( H_2O \) molecules surrounding one \( H_2O \) molecule in liquid water, we can analyze the structure and interactions of water molecules.

### Step-by-Step Solution:

1. **Understanding Water Molecule Structure**:
- A water molecule (\( H_2O \)) consists of one oxygen atom bonded to two hydrogen atoms. The molecular geometry is bent due to the two lone pairs of electrons on the oxygen atom.

2. **Hydrogen Bonding**:
- Water molecules exhibit hydrogen bonding due to the polarity of the \( H-O \) bond. The oxygen atom is more electronegative than hydrogen, creating a dipole moment where the oxygen atom carries a partial negative charge and the hydrogen atoms carry partial positive charges.

3. **Surrounding Molecules**:
- Each water molecule can form hydrogen bonds with neighboring water molecules. The oxygen atom of one water molecule can form hydrogen bonds with the hydrogen atoms of up to four neighboring water molecules.

4. **Counting the Interactions**:
- For a single \( H_2O \) molecule:
- The oxygen atom can form bonds with:
- One hydrogen from one neighboring water molecule.
- One hydrogen from another neighboring water molecule.
- The oxygen itself can also form bonds with two other hydrogen atoms from two additional neighboring water molecules.
- Therefore, a single \( H_2O \) molecule is surrounded by four \( H_2O \) molecules through hydrogen bonding.

5. **Conclusion**:
- Thus, the number of \( H_2O \) molecules surrounding one \( H_2O \) molecule in liquid water is **4**.

### Final Answer:
The number of \( H_2O \) molecules surrounded to one \( H_2O \) molecule is **4**.