Question
Chemistry Question on Solutions
Which of the following ions will be coloured in the aqueous solution?
(A) Ti3+
(B) Nb3+
(C) Cu+
(D) Y3+
Choose the correct answer from the options given below:
A
(C) and (D) only
B
(A), (B) and (D) only
C
(A) and (B) only
D
(A), (B), (C) and (D)
Answer
(A) and (B) only
Explanation
Solution
In aqueous solutions, ions with unpaired d-electrons exhibit color. T1³⁺ and Nb³⁺ have unpaired d-electrons, while Cu⁺ and Y³⁺ do not, hence they do not show color in aqueous solution.