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Highly electropositive metals are best produced by

1. electrolytic methods
2. reduction with carbon of their oxides
3. straight thermal decomposition of salts
4. reduction of their halides by hydrogen

Correct answer: electrolytic methods

Solution

Highly electropositive metals have very negative reduction potentials, so their compounds are too stable to be reduced by carbon or hydrogen. They are best obtained by electrolysis, which forces reduction at the cathode using electrical energy.

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