MEDIUMMCQ SINGLEJEE Advanced ChemistryInorganic ChemistrySolid statePrevious Year Questions
The appearance of colour in solid alkali metal halides is generally due to [RPMT 2010]
A.Schottky defect (b) Frenkel defect
C.Interstitial position
D.F-centres✓ Correct
Explanation
In F-center defect in which an anionic vacancy in a crystal is filled by one or more unpaired electron. These electron absorb light in the visible region and emits color. So, appearance of color in solid alkali metal halides is generally due to F-center. Hence the correct answer is option (d)
Practice More Like This
Take chapter-wise tests, track your progress, and master Solid state.
Start Free Practice →