Home Chemistry Solid State General When NaCl crystal is heated in sodium vapors…
Chemistry Solid State General Single Correct MCQ
Published on: August 13, 2026

When NaCl crystal is heated in sodium vapors, then it attains yellow colour. It is due to:

A
electrons trapped in cation vacancies.
B
F-centers, which is electron trapped in anion vacancy created by Cl – .
C
F-centers, which is cation trapped in cation vacancy created by Na + .
D
interstitial defect caused by external impurity.

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The correct answer is:
B

When NaCl crystal is heated in sodium vapors, then it attains yellow colour. It is due to F-centers, which is electron trapped in anion vacancy created by Cl – .

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