Q. Formation of coloured solution is possible when metal ion in the compound contains
A) Paired electrons
B) Lone pair of electrons
C) Unpaired electrons
D) None of these
Explanation
(c)
Formation of coloured solution is possible when metal ion in the compound contains unpaired electrons $e.g$.,
${Cu}^{+}$:$3d^{10}\ 4s^{0}$ colourless
${Cu}^{2 +}$:$3d^{9}\ 4s^{0}$ blue
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.