Given below are certain cations. Using inorganic qualitative analysis, arrange them in increasing group number from 0 to VI . A. Al^3+ B. Cu^2+ C. Ba^2+ D. Co^2+ E. Mg^2+ Choose the correct answer from the options given below.

P Block Elements PYQ — NEET 2024 · Q147 with Solution

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Correct answer: A

Group	Cations
Group-II	Cu$^{2+}$
Group-III	Al$^{3+}$
Group-IV	Co$^{2+}$
Group-V	Ba$^{2+}$
Group-VI	Mg$^{2+}$

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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

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Correct answer: A

Group	Cations
Group-II	Cu$^{2+}$
Group-III	Al$^{3+}$
Group-IV	Co$^{2+}$
Group-V	Ba$^{2+}$
Group-VI	Mg$^{2+}$

$\therefore$ The correct order is B, A, D, C, E

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