Which compound form polymer due to H-bond ?

Options

A. `H_(2)`S
B. `NF_(3)`
C. HF
D. HCl

Answer

To determine which compound forms a polymer due to hydrogen bonding, we need to analyze the compounds that exhibit hydrogen bonding characteristics. Hydrogen bonding occurs when hydrogen is covalently bonded to highly electronegative atoms such as fluorine (F), oxygen (O), or nitrogen (N).

### Step-by-Step Solution:

1. **Identify Compounds with Hydrogen Bonding:**
- Look for compounds that contain hydrogen atoms bonded to F, O, or N. Common examples include water (H₂O), hydrogen fluoride (HF), and ammonia (NH₃).

2. **Examine the Structure of Each Compound:**
- **Water (H₂O):** Each water molecule can form hydrogen bonds with four neighboring water molecules due to its bent shape and the presence of two lone pairs on oxygen.
- **Hydrogen Fluoride (HF):** HF molecules can form hydrogen bonds with each other, leading to a linear arrangement.
- **Ammonia (NH₃):** NH₃ can also form hydrogen bonds with other NH₃ molecules, creating a network.

3. **Consider Non-Polar Compounds:**
- Identify compounds that do not exhibit hydrogen bonding. For example, NF₃ does not form hydrogen bonds because nitrogen is not bonded to hydrogen in a way that allows for hydrogen bonding.

4. **Determine Polymer Formation:**
- Compounds that can form extensive hydrogen bonding networks can lead to polymer formation. In this case, water, HF, and NH₃ can form polymers due to hydrogen bonding.

5. **Conclusion:**
- Among the compounds discussed, HF (hydrogen fluoride) is a prime example of a compound that can form linear polymers due to hydrogen bonding.

### Final Answer:
The compound that forms a polymer due to hydrogen bonding is **Hydrogen Fluoride (HF)**.

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