If one assume linear structure instead of bent structure for water then which on of the following properties cannot be explained ? .

Options

A. The formation of intermolecular hybrogen bond in water
B. The high boiling point of water .
C. Solubility of polar compounds in water
D. Ability of water to form coordinate covalent bond .

Explanation

To solve the question, we need to analyze the properties of water and how they relate to its molecular structure. Water (H₂O) is known to have a bent structure due to the presence of two lone pairs of electrons on the oxygen atom. If we assume a linear structure instead, we need to determine which properties would not be explainable under that assumption.

### Step-by-Step Solution:

1. **Understanding Water's Structure**:
- Water has a bent molecular geometry due to the two lone pairs on the oxygen atom, which repel the hydrogen atoms, creating an angle of approximately 104.5°.

2. **Evaluating the Properties**:
- **Property A: Formation of Intermolecular Hydrogen Bonds**:
- In a linear structure, the oxygen atom can still form hydrogen bonds with other water molecules. Thus, this property can be explained even if we assume a linear structure.

- **Property B: High Boiling Point of Water**:
- The high boiling point of water is attributed to hydrogen bonding. Since hydrogen bonds can still form in a linear structure, this property can also be explained.

- **Property C: Solubility of Polar Compounds**:
- Water is a polar solvent, and its ability to dissolve polar compounds is due to its dipole moment. In a linear structure, the dipole moments of the two O-H bonds would cancel each other out, resulting in a non-polar molecule. Therefore, this property cannot be explained if water were linear.

- **Property D: Ability to Form Coordinate Covalent Bonds**:
- Water can form coordinate covalent bonds due to the lone pairs on the oxygen atom. This ability remains intact regardless of whether the structure is linear or bent.

3. **Conclusion**:
- The property that cannot be explained if water is assumed to have a linear structure is the **solubility of polar compounds** (Property C).

### Final Answer:
The property that cannot be explained if water is assumed to have a linear structure is the **solubility of polar compounds**.