Ionic solids conduct electricity in molten state but not in solid state. Explain.

Explanation

### Step-by-Step Solution:

1. **Understanding Ionic Solids**: Ionic solids are composed of positively and negatively charged ions held together by strong electrostatic forces of attraction, known as ionic bonds.

2. **Solid State Behavior**: In the solid state, these ions are arranged in a fixed lattice structure. The strong electrostatic forces between the oppositely charged ions keep them in place, preventing them from moving freely. As a result, the ions cannot dissociate or move, which is necessary for the conduction of electricity.

3. **Molten State Behavior**: When ionic solids are heated to their melting point, they transition into the molten state. In this state, the thermal energy overcomes the strong electrostatic forces holding the ions in the lattice.

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