Decreasing order of the hydrogen bonding in following forms of water is correctly represented by
A. Liquid water B. Ice C. Impure water
Choose the correct answer from the options given below:

Options

A. `C gt B gt A`
B. `Bgt A gt C`
C. `A = B gt C`
D. `A gt B gt C`

Answer

To determine the decreasing order of hydrogen bonding in the different forms of water (liquid water, ice, and impure water), we need to analyze the structure and bonding characteristics of each form.

### Step-by-Step Solution:

1. **Understanding Ice Structure**:
- Ice has a crystalline structure where water molecules are arranged in a tetrahedral geometry. Each water molecule forms four hydrogen bonds with neighboring molecules, leading to a stable and strong hydrogen bonding network.
- **Conclusion**: Ice has the strongest hydrogen bonding due to its rigid structure.

2. **Understanding Liquid Water Structure**:
- In liquid water, the molecules are in constant motion. While hydrogen bonds are still formed, they are transient and can break and reform rapidly. This dynamic nature means that the hydrogen bonding is less extensive compared to ice.
- **Conclusion**: Liquid water has moderate hydrogen bonding, weaker than that in ice.

3. **Understanding Impure Water**:
- Impure water contains various solutes or impurities that disrupt the hydrogen bonding network. The presence of these impurities interferes with the formation of hydrogen bonds between water molecules, leading to a further reduction in hydrogen bonding strength.
- **Conclusion**: Impure water has the weakest hydrogen bonding due to the disruption caused by impurities.

4. **Arranging the Forms of Water**:
- Based on the analysis:
- Ice (strongest hydrogen bonding)
- Liquid water (moderate hydrogen bonding)
- Impure water (weakest hydrogen bonding)
- Therefore, the decreasing order of hydrogen bonding is: **Ice > Liquid Water > Impure Water**.

### Final Answer:
The correct order of decreasing hydrogen bonding in the forms of water is:
**B (Ice) > A (Liquid Water) > C (Impure Water)**.