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Question
Molten sodium chloride conducts electricity due to the presence of ______.
Options
free electrons
free ions
free molecules
free atoms of Na and Cl
MCQ
Fill in the Blanks
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Solution
Molten sodium chloride conducts electricity due to the presence of free ions.
Explanation:
Molten sodium chloride conducts electricity because it contains free-moving ions, specifically Na+ and Cl−, which are produced when the solid lattice breaks down upon melting. These mobile ions carry electric current through the molten salt.
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