Chemistry - Complete d-block Question with Solution | TestHub

According to "solubility rule" following compounds are soluble in water: (i) All common group IA and ${\mathrm{NH}}_4^{+}$compounds. (ii) $\mathrm{All}$ common ${\mathrm{NO}}_3^{-}$(nitrate), ${\mathrm{CH}}_3{\mathrm{COO}}^{-}$(acetate), ${\mathrm{ClO}}_4^{-}$(perchlorate) compounds (iii) $\mathrm{All}$ common ${\mathrm{Cl}}^{-},{\mathrm{Br}}^{-},{\mathrm{I}}^{-}$compounds, except those of ${\mathrm{Ag}}^{+},{\mathrm{Pb}}^{2+},{\mathrm{Cu}}^{+}$and ${\mathrm{Hg}}_2^{2+}$ (mercurous) (iv) All common ${\mathrm{SO}}_4{}^{2-}$ (sulphate) compounds, except those of ${\mathrm{Ca}}^{2+},{\mathrm{Sr}}^{2+},{\mathrm{Ba}}^{2+}$ and ${\mathrm{Pb}}^{2+}$.