Q. Transition elements are coloured
A) Due to unpaired $d$-ellectrons
B) Due to small size
C) Due to metallic nature
D) All of the above
Explanation
The correct answer is Option A: Due to unpaired $d$-ellectrons.
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.