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प्रश्न
Ionic solids conduct electricity in the molten state, but not in solid-state.
उत्तर
In solid-state of a substance (ionic compound) ions are not free to move but in the molten (liquid) state they are free to move towards oppositely charged electrodes on passing an electric current. Hence, an ionic substance conducts electricity in the molten state and not in the solid-state.
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संबंधित प्रश्न
Frenkel defect does not change the density of the ionic crystal whereas, Schottky defect lowers the density of ionic crystal. Give a reason;
Fill in the blanks by choosing the appropriate word/words from those given in the brackets:
(increases, formic acid, decreases, less, zero, small, paired, atoms, unpaired, ions, pentagonal bipyramidal, electrical, more, ethylamine, molecules, propanoic acid, methylamine, chemical.)
The crystal of graphite is made-up of ________ while that of sodium chloride is made-up of _______.
Define the Frenkel defect in a solid crystal.
