Question

Why ionic solid conduct electricity in molten state?

Answer 1

Ionic solids conduct electricity in molten state but not in solid state. ... The ionic solids are insulators in the solid state because the ions are entrapped in fixed places in the crystal lattice & cannot move when electric field is applied.However, in molten state,they become good conductors of electricity.

Answer 2

Answer:

The ions of ionic solids are responsible for conducting electricity. In the solid state, however, these ions are not free to move around inside the solid because of the strong electrostatic forces. Hence, ionic solids do not conduct electricity in a solid state. Whereas, in a molten state, the ions are free to move and thus they can conduct electricity.