The solid NaCl is a bad conductor of electricity. This is because
In solid NaCl, there are no ions
Solid NaCl is covalent
In solid NaCl, there is no movement of ions
In solid NaCl, there are no electrons
Ionic solids do not conduct electricity in the solid state as the ions are fixed in their position and are not free to move about.
Hence, the correct answer is Option (3)
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