Which of the following statements is wrong?

Options

A. Covalent compounds are generally soluble in polar solvents
B. Covalent compounds have low melting and boiling points
C. Ionic solids donot conduct electricity
D. Ionic compounds conduct electricity in the fused state

Answer

To determine which statement is wrong, let's analyze each statement one by one.

### Step 1: Analyze the first statement
**Statement:** Covalent compounds are generally soluble in polar solvents.

**Explanation:** Covalent compounds, such as carbon tetrachloride (CCl4), are typically non-polar. According to the principle of "like dissolves like," non-polar substances do not dissolve well in polar solvents. Therefore, this statement is incorrect.

### Step 2: Analyze the second statement
**Statement:** Covalent compounds have low melting and boiling points.

**Explanation:** Covalent compounds generally have weak intermolecular forces (like Van der Waals forces), which means that less energy is required to break these forces. As a result, they tend to have low melting and boiling points. This statement is correct.

### Step 3: Analyze the third statement
**Statement:** Ionic compounds do not conduct electricity.

**Explanation:** Ionic compounds do not conduct electricity in their solid state because the ions are fixed in place and cannot move. However, they can conduct electricity when melted (fused) or dissolved in water (aqueous state) because the ions become mobile. Therefore, this statement is also incorrect.

### Step 4: Analyze the fourth statement
**Statement:** Ionic compounds conduct electricity in the fused state.

**Explanation:** In the fused state, ionic compounds do conduct electricity because the ions are free to move. This statement is correct.

### Conclusion
The wrong statement among the options is the first one: "Covalent compounds are generally soluble in polar solvents."

### Final Answer
The wrong statement is: **Covalent compounds are generally soluble in polar solvents.**

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