Solid NaCl is a bad conductor of electricity because:
Correct answer: C. In solid NaCl. there is no migration of ions
- A. Solid NaCl is covalent
- B. In the solid state, there are no ions
- C. In solid NaCl. there is no migration of ions
- D. In solid NaCl, there are not electron
Explanation
Conduction of electricity occurs when there is a free-moving charge (electrons or ions), so the answer is C.
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About Shape of Ionic Crystals
Ionic crystal shape depends on the regular arrangement of oppositely charged ions in a three-dimensional lattice. The topic covers coordination number, radius ratios, lattice geometry and structures such as sodium chloride, caesium chloride and zinc sulfide, which should not be confused with the molecular shapes predicted by VSEPR theory.
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