Which metal can not obtained by electrolysis of their aqueous salt solution?

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General Principles and processes of Isolation of Elements

medium

Which metal can not obtained by electrolysis of their aqueous salt solution?

Silver

Magnesium

Copper

Platinum

Solution

Highly reactive metals with lower reduction potentials than hydrogen are not obtained by electrolysis of aqueous solutions of their salts since their cations cannot be reduced at cathode in presence of water.Of the above metals, Magnesium is the only metal which has reduction potential less than that of Hydrogen.

Standard 12

Chemistry