Which one of the following metals could not b | vedclass

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(B) The standard reduction potential of $Mg^{2+}/Mg$ is $-2.37 \ V$,which is much lower than the reduction potential of water $(E^o = -0.83 \ V)$.In a

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$Mg$

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(B) The standard reduction potential of $Mg^{2+}/Mg$ is $-2.37 \ V$,which is much lower than the reduction potential of water $(E^o = -0.83 \ V)$.In an aqueous solution,water molecules are reduced more easily than $Mg^{2+}$ ions.Therefore,during electrolysis,$H_2$ gas is evolved at the cathode instead of $Mg$ metal.Thus,$Mg$ cannot be obtained by the electrolysis of its aqueous salt solution.

Which one of the following metals could not be obtained on electrolysis of aqueous solution of its salts?

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