. Assign oxidation numbers to all the elements in the reaction below. \mathrm{Cu}_{(\mathrm{s})}+2 \mathrm{AgNO}_{3}(\mathrm{aq}) \rightarrow 2 \mathrm{Ag}_{(\mathrm{s})}+\mathrm{Cu}\left(\mathrm{NO}_{3}\right)_{2}(\mathrm{aq})