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General Chemistry

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Identification of Unknown Metal in Electrolysis Reaction

CHEM-AOQC7O

An unknown metal, $\textrm{M}$, is electrolyzed. A current of $1.50\textrm{ A}$ was used for $82.3 \textrm{ s}$ to plate $75.4\textrm{ mg}$ of the metal from a solution containing $\textrm{M(NO}_3\textrm{)}_2$.

What is the unknown metal?

A

$\textrm{Cd}$

B

$\textrm{Co}$

C

$\textrm{Pb}$

D

$\textrm{Sn}$