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

The Correct Option is A

Step 1: Determine the group number for each cation.

• Al³⁺: Belongs to Group III.
• Cu²⁺: Belongs to Group II.
• Ba²⁺: Belongs to Group II.
• Co²⁺: Belongs to Group VII.
• Mg²⁺: Belongs to Group II.

Step 2: Order the cations by increasing group number.

The sequence from lowest to highest group number is:

• B (Cu²⁺) ¡ A (Al³⁺) ¡ D (Co²⁺) ¡ C (Ba²⁺) ¡ E (Mg²⁺)

Step 3: Final Answer

The correct sequence is:

Option (1): B, A, D, C, E