Q. The flame colours of metal ions are due to
A) Schottky defect
B) Frenkel defect
C) Metal excess defect
D) Metal deficiency defect
Explanation
(c)
In metal excess defect when holes created by missing of anions are occupied by electrons, there sites are called F-centres and are responsible for colour in the crystal
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.