Why is `NaCl` a bad conductor of electricity in the solid state?

Explanation

To understand why NaCl (sodium chloride) is a bad conductor of electricity in its solid state, we can break down the explanation into several key points:

### Step-by-Step Solution:

1. **Structure of NaCl**: Sodium chloride is an ionic compound composed of Na⁺ (sodium) and Cl⁻ (chloride) ions. In its solid state, these ions are arranged in a crystal lattice structure.

**Hint**: Remember that ionic compounds form a regular arrangement of ions in a lattice.

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