Chemistry - Salt Analysis Question with Solution | TestHub

\begin{array}{|c|c|}\hline Group & Cations \\\hline Group-II & \mathrm{Cu}^{2+} \\\hline Group-III & \mathrm{Al}^{3+} \\\hline Group-IV & \mathrm{Co}^{2+} \\\hline Group-V & \mathrm{Ba}^{2+} \\\hline Group-VI & \mathrm{Mg}^{2+} \\\hline\end{array} The correct order of group number of ions is $\underset{(\mathrm{B})}{{\mathrm{Cu}}^{2+}}<\underset{(\mathrm{A})}{{\mathrm{Al}}^{3+}}<\underset{(\mathrm{D})}{{\mathrm{Co}}^{2+}}<\underset{(\mathrm{C})}{{\mathrm{Ba}}^{2+}}<\underset{(\mathrm{E})}{{\mathrm{Mg}}^{2+}}$ $\therefore$ The correct order is $B,A,D,C,E$