A) Schottky defect
B) Frenkel defect
C) Interstitial position
D) F-centres
Correct Answer: D
Solution :
The appearance of colour in alkali metal halides is generally due to F-centres. F centers in NaCl produce a band of optical absorption towards the blue end of visible spectrum, thus the colour appears yellow under transmitted light. On the other hand, KCl with F-centers appears magenta, and KBr appears blue.You need to login to perform this action.
You will be redirected in
3 sec