Given below are certain cations. Using inorganic qualitative analysis, arrange them in increasing group…
Given below are certain cations. Using inorganic qualitative analysis, arrange them in increasing group number from 0 to VI .
A. $\mathrm{Al}^{3+}$
B. $\mathrm{Cu}^{2+}$
C. $\mathrm{Ba}^{2+}$
D. $\mathrm{Co}^{2+}$
E. $\mathrm{Mg}^{2+}$
Choose the correct answer from the options given below.
B, C, A, D, E
E, C, D, B, A
E, A, B, C, D
B, A, D, C, E
Solution
\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
$\underset{(\mathrm{B})}{\mathrm{Cu}^{2+}} \lt \underset{(\mathrm{A})}{\mathrm{Al}^{3+}} \lt \underset{(\mathrm{D})}{\mathrm{Co}^{2+}} \lt \underset{(\mathrm{C})}{\mathrm{Ba}^{2+}} \lt \underset{(\mathrm{E})}{\mathrm{Mg}^{2+}}$
$\therefore \quad$ The correct order is $B, A, D, C, E$