Question
Question: In the following figure, the blank X is known as ……. And why? <img src="https://cdn.pureessence.tec...
In the following figure, the blank X is known as ……. And why?
A
Electron trap, because an electron is present here.
B
Metal deficient centre, since negative charge is present here.
C
F – centre, since it imparts colour to the crystal.
D
F – centre, since it is responsible for positive charge one the crystal.
Answer
F – centre, since it imparts colour to the crystal.
Explanation
Solution
The anionic sites occupied by the unpaired electrons are called F-centres form the German word Farbenzenter for colour centre.