In the laboratory, sodium chloride is made by burning the sodium chloride in the presence of sodium is yellow in colour, The cause of yellow colour is

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Presence of $N a^{+}$ ions in the crystal lattice

Presence of $C l^{-}$ ions in the crystal lattice

Presence of electrons in the anionic vacancies of the crystal lattice

Presence of face centered cubic crystal lattice

answer is C.

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Detailed Solution

Yellow colour on heating NaCl in the presence of Na is due to presence of electrons in anion vacancies (F-centres).

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