Question

Which of the following is not a typical property of an ionic compound?

• A. High melting point
• B. Conducts electricity in aqueous and molten state
• C. They are insoluble in water
• D. They exist as oppositely charged ions even in the solid state

Answer 1

The correct option is C

They are insoluble in water

Explanation:

Ionic compound: Ionic compounds are those compounds that are formed by a strong electrostatic force of attraction between oppositely charged ions.

Characteristics of Ionic compounds:

Melting point:

• Ionic compounds are held together by a strong electrostatic force of attraction between oppositely charged ions.
• Hence, the melting point of the ionic compound is high.

Solubility in water:

• Ionic compounds are soluble in water. Due to the high dielectric constant of water, Ionic compounds dissolved in water and dissociate into its ions.
• Example: Sodium chloride(NaCl) is an ionic compound that dissolves in water.

Existence in the solid state:

• Ionic compounds exist as ions in solid-state.
• Example: A NaCl crystal is composed of Na⁺ and Cl^- ions in which each Na⁺ is surrounded by six Cl^- and vice-versa.

Conduction of electricity:

• Due to the presence of ions in the aqueous and molten state, ionic compounds conduct electricity.

Hence, option (C) is correct.