A solid has properties like high boiling point, high melting point, hard, soluble in polar solvents. Which type of solid is this?

Options

A. Ionic solid
B. Covalent solid
C. Coordinate bond
D. All Question

Explanation

To determine the type of solid described in the question, we will analyze the properties provided: high boiling point, high melting point, hardness, and solubility in polar solvents.

### Step-by-Step Solution:

1. **Identify the Properties**:
The solid has:
- High boiling point
- High melting point
- Hardness
- Solubility in polar solvents

2. **Analyze High Melting and Boiling Points**:
- Solids with high melting and boiling points typically indicate strong intermolecular forces. This is characteristic of ionic solids, which have strong electrostatic forces between cations and anions.

3. **Consider Hardness**:
- Hardness is another property of ionic solids. They are generally hard due to the strong ionic bonds that hold the lattice structure together.

4. **Evaluate Solubility in Polar Solvents**:
- Ionic solids are soluble in polar solvents (like water) due to the ability of the polar solvent to stabilize the ions once they dissociate. The positive and negative ions are attracted to the partial charges of the polar solvent molecules.

5. **Conclusion**:
- Based on the analysis of the properties, the solid described is an **ionic solid**. Ionic solids are characterized by high melting and boiling points, hardness, and solubility in polar solvents.

### Final Answer:
The type of solid is **ionic solid**.

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