why are highly electropositive metals are only extracted by electrolysis
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(i) Electrode potentials of highly electropositive elements.
(ii) The form (ore) in which the metals are available in nature.
(iii) Relation between elecropositivity of the metal and the chemical stability of the respective ore.
(iv) Relation between the elecropositivity of the metal and the tendency of it to get reduced.
(v) Mechanism of electrolytic reduction.
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Answer:
It's because they are found in nature in the combined state, and no other elements can be used to reduce them to get the metal. Hence, the only option is electrolysis.
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