A) Schottky defect
B) Frenkel defect
C) Interstitial position
D) F-centres
Correct Answer: D
Solution :
[d] 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.
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