Which one is not true about sodium chloride?

Options

A. It does not conduct electricity in solid state.
B. It is highly soluble in benzene.
C. It has ionic nature.
D. In conducts electric current in molten state.

Explanation

To determine which statement is not true about sodium chloride (NaCl), let's analyze each option step by step.

### Step 1: Analyze Option 1
**Statement:** Sodium chloride does not conduct electricity in solid state.

- **Explanation:** Sodium chloride is an ionic compound. In its solid state, the ions (Na⁺ and Cl⁻) are held together in a rigid lattice structure and cannot move freely. Therefore, it does not conduct electricity in solid form. This statement is **true**.

### Step 2: Analyze Option 2
**Statement:** Sodium chloride is highly soluble in benzene.

- **Explanation:** Sodium chloride is an ionic compound, and it typically dissolves well in polar solvents like water due to the attraction between the ions and the polar molecules. Benzene, however, is a nonpolar solvent. According to the principle "like dissolves like," ionic compounds do not dissolve well in nonpolar solvents. Therefore, this statement is **not true**.

### Step 3: Analyze Option 3
**Statement:** Sodium chloride has ionic nature.

- **Explanation:** Sodium chloride is formed from the transfer of an electron from sodium (a metal) to chlorine (a non-metal), resulting in the formation of Na⁺ and Cl⁻ ions. This transfer of electrons and the resulting electrostatic attraction between the oppositely charged ions give NaCl its ionic nature. Thus, this statement is **true**.

### Step 4: Analyze Option 4
**Statement:** Sodium chloride conducts electric current in molten state.

- **Explanation:** When sodium chloride is melted, the rigid ionic lattice breaks down, allowing the ions to move freely. This mobility of ions enables the conduction of electricity. Therefore, this statement is **true**.

### Conclusion
After analyzing all the options, we find that **Option 2** is the statement that is not true about sodium chloride.

### Final Answer
**Option 2: It is highly soluble in benzene.**

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