The metals high up in the reactivity series are very reactive. These metals are obtained by _______.
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A.
electrolytic reduction
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B.
heating with carbon
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C.
heating in air
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D.
heating in absence of air
Correct Answer:
A. electrolytic reduction
Explanation:
Metals positioned high in the reactivity series, such as sodium, magnesium, and aluminum, are very reactive because they form stable compounds that cannot be reduced by heating with carbon. To extract these metals, electrolytic reduction is used, where an electric current is passed through the molten metal ore. In this process, the positively charged metal ions are attracted to the cathode (the negative electrode), where they gain electrons to become pure metal atoms and deposit on the surface. This method is essential for obtaining highly electropositive metals in their pure form.
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