AP EAMCET · Chemistry · Solid State
F-centres are formed in \(\mathrm{NaCl}\) crystal if it is heated with \(\mathrm{Na}\) vapour. The above is due to
- A Schottky defect
- B Dislocation defect
- C Metal excess defect
- D Metal deficiency defect
Answer & Solution
Correct Answer
(C) Metal excess defect
Step-by-step Solution
Detailed explanation
The crystal lattice has vacant anion sites, which are occupied by electrons. Anion sites occupied by electrons are called \(\mathrm{F}\)-centres ( \(\mathrm{F}\) is abbreviated from Farbe, the German word for colour. These F-centres are associated with the colour of the compound…
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