A) The boiling point and melting point of ionic crystals are high.
B) These dissolves in water and other solvents.
C) At low temperature, these are conductor of electricity in solid state.
D) Their cohesive energy is high.
Correct Answer: C
Solution :
Ionic crystals are conductor of electricity only in the aqueous or molten state because they dissociate into ions in aqueous or molten state and these ions conduct the electricity. But in the solid state, ionic crystals are the bad conductor of electricity.
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