Down's cell is used to prepare:
Correct answer: D. Sodium metal
- A. Sodium carbonate
- B. Sodium bicarbonate
- C. Sodium hydroxide
- D. Sodium metal
Explanation
Down's cell is a method for obtaining sodium metal by the electrolysis of molten sodium chloride. In this process, graphite serves as the anode, releasing chlorine gas, while a steel cathode collects the molten sodium metal. Sodium carbonate, sodium bicarbonate, and sodium hydroxide are not products of this process. Sodium carbonate is produced using the Solvay process, sodium bicarbonate is derived from sodium carbonate, and sodium hydroxide is produced through the chlor-alkali process.
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About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
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