Explain the properties of ionic compounds.

1. Ionic compounds are solids and hard due to strong force of attraction between positive and negative ions.
2. They are generally brittle and break into pieces when pressure is applied. 
3. Ionic compounds have high melting and boiling points, as a considerable amount of energy is required to break the strong intermolecular attraction.
4. They are generally soluble in water and insoluble in solvents such as kerosene, petrol etc.
5. Ionic compounds in the solid state do not conduct electricity because the movement of ions in the solid state is not possible due to their rigid structure, but they conduct electricity in the molten state. The conduction of electricity through a solution involves the movements of charged (ions) particles. A solution of an ionic compound in water contains ions, which move to the opposite electrodes when electricity
is passed through the solution.

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