Which of the following is not conductor of electricity?
Correct answer: C. NaCl(s)
- A. NaCl(aq)
- B. NaCl(molten)
- C. NaCl(s)
- D. Silver metal
Explanation
The correct answer is C) NaCl(s). Solid sodium chloride does not conduct electricity because its ions are fixed in a lattice structure, preventing movement. Option A) NaCl(aq) and B) NaCl(molten) conduct electricity due to free-moving ions in solution and molten state, respectively. Option D) Silver metal is a conductor because of its free-moving electrons in metallic bonding.
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