Question

common salt conduct electricity only in molten state why ???

Answer 1

Hii there!

In order to conduct electricity a substance must have charge particles, such as electrons and ions, that are free to move freely through it. In the solid state, ionic compounds such as sodium chloride have their ions fixed in position and therefore these ions cannot move so solid ionic compounds cannot conduct electricity. However in the molten state, ions in ionic compounds are free to flow and therefore molten sodium chloride can conduct electricity.

Hope this would help you

Answer 2

common salt conduct electricity in only molten state because movable elactron are found in molten state which conduct electricity very easily .