Chemistry - Complete d-block Question with Solution | TestHub

In the following reaction sequence in aqueous solution, the species X, Y and Z, respectively, are

${\mathrm{S}}_2{\mathrm{O}}_3^{2-}\stackrel{\mathrm{A}{\mathrm{g}}^{+}}{\to }\underset{\text{clear solution }}{\mathrm{X}}\stackrel{\mathrm{A}{\mathrm{g}}^{+}}{\to }\underset{\text{white precipitate }}{\mathrm{Y}}\stackrel{\text{with time}}{\to }\underset{\text{black precipitate}}{\mathrm{Z}}$