The sum of oxidation states of two silver ions in $\left[\mathrm{Ag}{\left({\mathrm{NH}}_3\right)}_2\right]\left[\mathrm{Ag}(\mathrm{CN}{)}_2\right]$ complex is

In the given complex${\left[\mathrm{Ag}\left({\mathrm{NH}}_3\right)\right]}^{+}$ hence here ($x+0=+1$; $x=1$), and ${\left[\mathrm{Ag}{\left(\mathrm{CN}\right)}_2\right]}^{-}$ here($x+2(-1)=-1$; x=1).the total of two silver ions' oxidation states in $\left[\mathrm{Ag}{\left({\mathrm{NH}}_3\right)}_2\right]\left[\mathrm{Ag}(\mathrm{CN}{)}_2\right]$ complex is 2.

Hence, correct answer is 2