Question

Given below are certain cations. Using inorganic qualitative analysis, arrange them in increasing group number from 0 to VI.
A) Al3+
B) Cu2+
C) Ba2+
D) Co2+
E) Mg2+
Choose the correct answer from the options given below

• A. B, A, D, C, E
• B. B, C, A, D, E
• C. E, C, D, B, A
• D. E, A, B, C, D

Answer 1

Answer: (A)

B, A, D, C, E

Answer 2

Step 1 : Assign group numbers based on periodic table positions:

B ($Cu^{2+}$): Group I A ($Al^{3+}$): Group III

D ($Co^{2+}$): Group V C ($Ba^{2+}$): Group II

E ($Mg^{2+}$): Group VI

Step 2 : Arrange in increasing group number:

Order: B $<$ A $<$ D $<$ C $<$ E