Q. The ion which exhibits green colour
A) ${Cu}^{2 +}$
B) ${Mn}^{2 +}$
C) ${Co}^{2 +}$
D) ${Ni}^{2 +}$
Explanation
(d)
The compounds of nickel are green coloured due to $d - d$ transition in presence of ligand in $Ni^{2 +}$ cations.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.