Solid State Question 260
Question: In the laboratory, sodium chloride is made by burning the sodium in the atmosphere of chlorine which is yellow in colour. The cause of yellow colour is
Options:
A) Presence of $ N{{a}^{+}} $ ions in the crystal lattice
B) Presence of $ C{{l}^{-}} $ ions in the crystal lattice
C) Presence of electron in the crystal lattice
D) Presence of face centered cubic crystal lattice
Show Answer
Answer:
Correct Answer: C
Solution:
Yellow colour on heating $ NaCl $ in presence of $ Na $ is due to presence of electrons in anion vacancies (F-centres).
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