A) conductivity of the crystal increases due to F-centre
B) produce colour to the crystals
C) electrons are held in the voids of crystals
D) Both (a) and (b)
E) All of the above
Correct Answer: E
Solution :
All statements regarding F centre are correct. ? It is a crystallographic defect in which an anionic valency in a crystal is filled by unpaired electrons. ? Due to which conductivity of crystal increases. ? Colour produce because ions get excited and are displaced from their normal crystallographic positions leaving behind some electrons. e.g. \[NaCl\]heated in a metallic Na atmosphere.
You need to login to perform this action.
You will be redirected in
3 sec
