Question

Sodium chloride has a crystalline structure made up of $N{a}^{+}$ and $C{l}^{-}$ ions. Why does NaCl not conduct electricity in solid state?

• A. Solid s do not conduct electricity
• B. The ions of NaCl become mobile only in molten state and are not free to move in solid state
• C. The crystalline structure does not have ions
• D. When a bond is formed between ions they lose their charge

Answer 1

Answer: (B)

Sodium chloride has a crystalline structure made up of $N{a}^{+}$ and $C{l}^{-}$ ions but NaCl does not conduct electricity in solid state as due to electrostatic force of attraction, the ions do not move when electric current is applied in solid state.