Which one of the following properties is not generally exhibited by ionic compounds?

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Solubility in water

Electrical conductivity in solid state

High melting and boiling points

Electrical conductivity in molten state

answer is B.

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Detailed Solution

Ionic compounds do not generally exhibit electrical conductivity in a solid state.
An ionic compound can conduct electricity if only it contains free-moving electrons. Ionic compounds in their solid state can’t conduct electricity because free-moving electrons are absent. Hence, ionic compounds function as an insulator in solid form. But in a molten state, ionic compounds have free-moving ions and can conduct electricity. The ions are firmly bound by strong electrostatic forces of attraction in the solid state of ionic compounds. Due to these, the ions can’t move freely, and ionic compounds in their solid state do not exhibit electrical conductivity.

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