Boric acid is polymeric due to :

Explanation

**Step-by-Step Solution:**

1. **Understanding Boric Acid Structure**:
- Boric acid (H₃BO₃) has a molecular structure that includes boron (B), oxygen (O), and hydrogen (H) atoms. The arrangement of these atoms is crucial to understanding its properties.

2. **Identifying the Functional Groups**:
- In boric acid, each boron atom is bonded to three hydroxyl (–OH) groups. The structure can be visualized as a central boron atom surrounded by three oxygen atoms, each of which is bonded to a hydrogen atom.

3. **Electronegativity and Dipole Formation**:
- Oxygen is more electronegative than hydrogen, which leads to a partial negative charge on the oxygen atoms and a partial positive charge on the hydrogen atoms. This creates dipoles within the molecule.

4. **Hydrogen Bonding**:
- The partial positive charge on the hydrogen atoms allows them to interact with the partial negative charge on the oxygen atoms of neighboring boric acid molecules. This interaction is known as hydrogen bonding.

5. **Polymeric Nature**:
- The hydrogen bonds between the molecules lead to the formation of a network or polymeric structure. This means that multiple boric acid molecules are linked together through these hydrogen bonds, resulting in a larger, more complex structure.

6. **Conclusion**:
- Therefore, boric acid is considered polymeric due to the presence of hydrogen bonds that facilitate the formation of a network of interconnected molecules.

**Final Answer**: Boric acid is polymeric due to the presence of hydrogen bonding between the molecules.

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