Q. Which of the following ions is coloured?
A) $Cu^{+}$
B) $Cu^{2 +}$
C) $V^{5 +}$
D) $Ti^{4 +}$
Explanation
The correct answer is Option B: $Cu^{2 +}$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.